Great question re: grad school:
For me, it's because most graduate programs I anticipate my kids would be interested in would be Ph.D. track and would come with stipends and fellowships (especially common in math, science, some of the more obscure liberal arts disciplines). I anticipate them needing substantially less financial support as grad students than they will as undergrads. I could also see an outcome where they work in business for a few years and then return to school part-time for an executive MBA, and in that case, corporate tuition reimbursement would play in.
Two exceptions to the stipend/fellowship/corporate reimbursement thinking: med school is typically solely out of pocket (I would contribute to that) and law school is typically big $$$ (if law as an industry looks anything like it does right now when that future day comes, I'm not financially contributing to law school unless it's Top 10, because the unemployment rates from schools beneath that tier are obscenely high, and law firm associate life stinks, frankly. Ever try to bill 2000 hours in a year? NOT FUN. Not the lifestyle I want to encourage for my kids ... there are better ways to achieve lucrative professional success than law at this point)
Maybe now you're seeing what may be a flaw in my character, depending on your value system. A big goal in my life has been to make money, specifically making career choices more for income potential than personal passion. I do not think you need to passionately love your job. I think liking your job is more than sufficient if it is paying you enough to live very well. I am going to encourage high-income professional tracks for my daughters. It makes life so much better. Of course, not everyone agrees. My nanny (my DH's cousin) is about to take a social work job in Philadelphia where she will never break $40K for a very difficult and emotionally taxing job. That is her vocation. I support her 100%, but I will not encourage that outcome for my girls - if they say they want a career in social service, I am going to encourage psychiatry, public health administration, more lucrative paths.
So why might I have that flaw in my character? And why do I feel so strongly about helping my kids pay for college? Because I DIDN'T have that financial support behind me. I worked 20 HPW at a tanning salon through high school to help pay the rent for my single-parent family after my father went to jail, child support stopped and the house got foreclosed. I would literally go to school 7-3, sports practice 3-5:30, musical rehearsals 5:30-7, tanning salon 7-11, whatever studying I could manage 11-1, sleep, up at 6, lather rinse repeat. My teachers knew what I was doing and kindly turned a blind eye to the fact that I barely handled in homework. I do not think this was a character-building experience. I think the only thing that got me through it was knowing that if I could make it to June of senior year and graduate as valedictorian, going to college for free was going to happen for me.
I was able to go to college because I got a lot of scholarship and financial aid help from a very generous school with a no-loan policy (they covered my full financial need). It was a miracle. It changed my life. A big part of my personal mission is to give my girls that same gift I was given, to come out of school with no loans and be free to explore the world in their 20s. I had the luxury of being able to do that and IT WAS AWESOME.
I remember when you were living that life, Dana. Yours is certainly an amazing story - and NOT a hoax!
What I find disturbing is the glee and delight that the OP shows in declaring they will not support their children in college. To me, traveling 6 weeks a year while your children are not just struggling but living through hell is not a good way to "build character".
It's a good way to make your kids hate you.
I am all for hard work. But, as a parent, if I can make it easier for my kids to work hard in school, that is my responsibility, whether that is emotional or financial support or advice and career counseling. After all, there is biologically nothing magical about turning 18. In fact, science shows that the brain is not fully mature until age 25, and functionally, most young adults do not develop higher level judgment, empathy, reasoning, and logic until around then. Yes, I know, there are exceptions, and many will probably have stories about how they left home at 16 and was fully capable of taking care of themselves. And if you were one of them, I applaud you. But you are the exception, not the rule.
"Building character" does not require going through hell. Character is built in the way you treat others, in the values by which you were raised, by your role models and by your priorities in life. For many, that priority includes giving their children what they need to succeed, including financial support, so that they can do well in school, and be sucessful in life.
I don't see the OP's argument that helping to pay for college will somehow make their children dependent on them for a hand-out all their lives. My parents supported me and paid for 100% of my undergraduate and medical school expenses. When I was a resident and earning a salary, their financial support ended. I see doing the same for our children. As long as they are in a situation where they cannot earn a full time wage, we will help them. And as I posted yesterday, the costs of post-graduate education are staggering, while the opportunities for grants and scholarships are becoming harder and harder to get.
Topics like this that deal with parenting always get lots of responses. And everyone does what they feel is best, but I just don't think that helping your children in college will spoil them for life.