if you live alone do you bother to use soap when you wash dishes?

Of course. Who wants greasy dishes and glasses?

Yes. I like to think it cuts grease and bacteria left by the food that was on those dishes previously.

Would it matter if I didn't live alone? I have a dishawasher in any case. 🙂

yes then the dishwasher

Of course

i don't always.

yes. always