Thanks for the replies ladies! I will ponder this more....
I see your points tho. It would be a lot of work to have to keep track of. So it sounds like you guys don't have this issue of "making sure i'm getting my money's worth and that my child is there the whole day" deal. I do have some children here who their parents actually need all of my hours, bussing to and from work downtown etc. I would feel bad making them pay so much just to follow the hourly rate so maybe if I brought up in the interview that they respectfully pick up their children when they are off work (I do mention this once they don't come after work a few times). I think its a disrespect feeling I get when they take advantage of the hours like that. I live on my own and have no children of my own. Sometimes I think, that they all think I don't have a life outside of taking care of their children and that I don't/won't mind if they leave them here way after they are done work.
Thanks for hearing me out anyway, feels good to vent sometimes!