Bagging own groceries-where do you stand?

I lived in London for a long time where everyone bagged their own groceries. So now when I’m in the states, I do that as well. (I like doing it because then I know where things are and I make sure that I got everything that I needed to get)

also I think it’s weird when we just stand there and watch somebody else do our work for us.

Plus, sometimes the cashier gets weird if I do it myself. I found my solution now is to ask if it’s OK if I bag myself? that puts them at ease .....what is everyone else think?