I'd say 8 out of 10 times I do. I always, always do when I use the bathroom in public. Sometimes at home if I'm in a hurry I'll forget. I keep wipes in the bathroom and sometimes I'll grab one of those and wipe my hands. But I have the hand washing police living with me and if she sees me forget she'll say "ewww mommy didn't wash your hands" lol
I would say that I wash my hands everytime except if I get up to pee in the middle of the night. Weird, I know, but it takes me forever to get back to sleep, so the less I do, the easier it is for me to fall back asleep.