Briefs are actually very comfortable and offer lots of support, but they're hideously unfashionable and I probably wouldn't be seen dead in them. Especially if they were those old granddad ones that Walter White wore in Breaking Bad.
Boxers give better ventilation but offer no support and are horrible when they ride up, which they do pretty much all the time.
Boxer briefs are therefore the best of both worlds, a good compromise would you, hence why I wear them now. I did wear briefs until I was about 12 though, but that was mainly because I didn't really think about my underwear, or any clothing at all for that matter and because it was my mother who mainly bought and chose my clothes, which obviously changed when I moved from being a preteen to a teen boy.