Yeah, while I'm sure it's fine not to, most of the guys I know shave whatever hair they get on the back of their neck. I don't know what I'll get on T either, my dad keeps his beard as stubble so I don't know how quickly or how much grows. Hopefully I'll actually get decent facial hair, knowing my luck I'll end up baby-faced with a lawn on my neck, too. Already growing one on my back XD
When I first got my hair cut in the back a little while ago my mom thought I was getting T from a friend or something because the cisfemales in my family are devoid of bodily hair on both sides, with the exception of my paternal grandmother. She went for electrolysis, but even before that her hair would have nothing on mine. Not that I don't like it, but could it maybe grow on the other side too, please? 😛