You can feel better about it by doing your shoe shopping with me!
(even if I don't want to go shoe shopping much/ever...)

I always jump between 10 and 10.5 US, whichever is more comfortable/convenient. My dad's feet are pretty tiny, I don't know his shoe size but we were sharing shoes when I was younger (probably 12-13) and then mine became way too big for him. You don't really notice it until he takes his shoes off and it's like wow those are small shoes!