When do you stop going to the public toilet with your child?

I have a almost 8 yr old Boy and he want to go to the boys loo by himself but I wont let him I still make him come in with me to the ladys if there is a disapled or baby room with a loo then I will take him there but he still doesnt like this and want to go to "his" toilets..

What do you all do?

what age did you stop going with your child?