I'll join your band wagon OP if you want! I'm 31 this year and will undertake Inetrior Design and Architecture next year at uni ON CAMPUS (I just realised I'm going to look quite old next to all the 18/19 year olds
I also didn't go to uni straight after school as I really just wanted to get out there and earn good money. I don't regret it all and I also think that I'm in a better frame of mind (**cough** maturity) to take study seriously. I'm trying not to think about the fact that I'll probably pushing 40 once my degree has finished.
Personally, I think you'll be taken MORE seriously when competeing for jobs as you'll have more life experience behind you.