As a woman who didn't bother to finish her degree and now am a mum, yep, Uni is more important than I gave it credit for. Having come back from 6 years of babies/ mat leave time, it would be so much easier if I had a degree now. Everyone just sees me as a mum and with no degree behind me in my field. If I quit my job, I'll have difficulty finding something else-especially part time that pays decent and is interesting work.
So yes, I wish I had finished 15 years ago.
Having said that, if my boys want to be a mechanic or some sort of a tradie, I'd be ok with it, boys seem to do better with that stuff (and I know that's stereotyping and not PC to say). As long as they have qualifications and have some sort of ambition - maybe to start their own business or something.