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.
And it can be acquired through practice. I’m a lefty but I’m way more comfortable using a mouse with my right hand from years of practice. I worked in IT so it wasn’t feasible to always move the mouse to the other side when working on other people’s computers or on server KVMs.
Edit: this also applies to all handed devices like scissors, beveled knives, etc.