I sometimes do, I'll wear liquid foundation for date nights or special occasions and then a powder mineral foundation for everyday work wear. I go barefaced at home and on most days off if not doing something special with my boyfriend
I think I had a bottle of foundation way back when I was 16 and just starting out wearing makeup, it was so messy that I never bothered with it again or learned the proper way to apply it.
Most of the time I use a bit of pressed powder, eye makeup, blush, and lip makeup.
I tend to skip the eye liner and blush if I'm in a hurry though.
I didn't for a long time, then I started wearing it just out of curiosity and it took forever for me to be able to stop using it. It was so bad for my skin, but it was a viscous cycle. I would wear it and break out and then put it on to cover the acne.
Special occasions, and it's the cream-to-powder stuff. My problem is that I tend to sweat my make-up off, so foundation is never part of any make-up I wear unless it's completely necessary/appropriate (kind of like pantyhose).
Although I did wear theatrical foundation back in high school. It made me so pale because of the thickness being like a sunscreen and I loved it, but I just can't bring myself to wear it anymore.