I’m right-handed but I mostly use my left for things like opening doors, picking up stuff, using phone, holding food… and my right hand for things that requires fined dexterity like writing, using utensils, using keys… My friends see me using my left-hand most of the time and kept asking me why I barely use my right hand. Some people who met for the first time actually thought that I’m left-handed for some reason.
Is it really that weird to not use your dominant hand as much? I’m sure I’m not born left-handed and trained to be right-handed when I was small, I’ve been right-handed for as long as I can remember.
It isn’t strange to use your non-dominant hand for things, no. Maybe most people do lean toward using their dominant hand for everyday tasks, but I think it’s a matter of habit for most things. “Non-dominant” doesn’t mean “nearly useless”.
I would say it is a bit strange for your friends to pay a lot of attention to which hand you use to unlock doors.