currently i am not, but i will answer your questions in relation to my last job as a cook...
This was at a very popular seafood restaurant in my town...
I liked it while i was doing it, i learned a ton. I worked full time, M-T-H-F-S, usually the 12pm-8pm shift. So basically, i cooked for the better part of lunch, prepped for dinner, then cooked for the better part of dinner. Lunch was usually two cooks with joint responsibilities, dinner was usually 3 with the head chef in accompaniment. I was hired into the position, as i had prior kitchen knowledge and my employer knew i wanted to learn the trade, so to speak. I made $8/hr, but it was really only a summer job, and i have been offered a substantial raise if i choose to come back this summer.
Stress...whew. All types of stress. It was HOT. all the time. lots of heavy lifting, lunches and dinners got ridiculously busy, never more than 4 kitchen staff at one time.
It was (at most times) fun and very educational job. A lot of the fun factor had to do with my co-workers. The head chef (who has since been replaced) could be a real d!ck some times, but the rest of the kitchen staff was usually very upbeat, which makes all the difference in the world. stay positive, it helps soften the concussion of mistakes. If everyone is already pissy and someone makes a mistake, its just baaaad.