Working Late

I hate working late. Yes, I realize that I arrived an hour later than I anticipated but I don't understand why I have to stay late. I think I should be able to come in late and still leave at the same time without retribution. I wish that I only worked 6 hour days. That would be perfect. Who came up with 8 hours anyway? Who's idea with this? I'm not sure I was really meant to work this long. Okay, I have a pretty easy job, but I still hate working late. It sucks.