What time do you think a 2 year old should go to bed? Do you think a 2 year old should have a set bed time?

I'm asking because I babysat my 2 year old Great Nephew last night. He is a cutie pie, but a handful. He didn't go to sleep (on the couch) until 10pm! Needless to say, I was exhausted. I had to pick him up and bring him to bed. He cried for about 10 minutes and then fell back asleep.

I just remember when I was younger, having to babysit, and having to put the baby to sleep at a regular time.

Am I just getting old?