It's certainly not "necessary" but some people make different choices than you do. I'd have hated to send my daughter away to school with only room, board, tuition and a meal plan. I think that would have been a miserable experience for a college freshman. Just my choice...not right or wrong.
I wanted my daughter to be able to join a sorority, drive off campus, shop for clothes at the nearby outlet mall, go out for pizza off campus, etc. I was perfectly willing to pay for all that. I saw that as part of my obligation.
Any money she earned with school year and summer jobs was put into a savings account. She had a nice nest egg when she graduated. That was my choice. Again, not right or wrong.
That's certainly true. I did not mean to imply my choice was better, but it was the right choice for us, given our limited funds.