I paid my own way through school, and while it wasn't easy, I've recouped all my efforts many times over in salary, job security, and job satisfaction. I'll say this though: it was way harder than was healthy for me. I lived in apartments that weren't safe, did without textbooks sometimes, and sometimes didn't have enough money to eat or buy real necessities. I want my daughters to pay a portion of their college expenses, but I don't want them to be forced into such an extreme position.
I never even considered loans. I grew up in a household where tomorrow's paycheck was never a sure thing, and I was never willing to assume that I'd be able to repay loans. It seemed "safer" to work hard and do without today instead of banking on tomorrow being better. That was a good choice: For the first couple years after graduation, I was still dirt poor.
I started saving for my daughters' educations before they were conceived. I intend to pay their basic necessities: tuition, fees, dorm room, and meal plan. I'll be prepared to pay these things for four years at a state university (we're blessed with 16 excellent state schools, with a variety of locations, sizes, and academic programs -- they will have no trouble finding something that'll suit them). If they choose to live at home and attend the very good public school 20 minutes down the road, I'll buy them a reliable car instead of the dorm room. I'll keep them on my health insurance and my cell-phone plan as long as they're in college.
I expect them to work full-time in the summer and part-time during their college semesters. I will expect them to pay for their books and spending money. I will not pay for cars for students who live in dorms. I will not buy expensive clothing, spring break trips, or sorority memberships. If they want these things, they'll have to pay for them themselves.
If they want "more" than the basic experience I'm willing to provide, they will have to foot the bill for the difference. For example, if they choose an expensive private school, I'll still give them the amount I would've paid towards public school tuition. If they want to live in an apartment, I'll give them the cost of a dorm room to apply towards their rent.
On the other hand, if they earn scholarships, I'll still give them the amount I would've paid towards tuition, etc. That will negate the need for a part-time job during the school year.
In return, I expect them to keep their grades up, and I expect them to maintain a full-schedule so that they're progressing towards graduation at a reasonable pace.