Bad points about being 6"3.
If the trains cramped and your by the door, you are getting of that train with a neck ache thats going to last you for half an hour
Sitting down on most places of a bus becomes painful, with your knees digging into the chair in front
Everyone can see up your nose if they bothered to look
About growing, im 18 in 3 months and hopefully i stopped growing i was one of the smallest guys, being latin i took it as normality being around 5"4 at the age of 15, then i just grew and 2 and a half years later im 6"3 dwarfing my 5"6 parents. I hope ive stopped growing but for a fact a couple of my friends still are so while you may be hoping that you keep growing i am praying that i dont because at this height its hard to pump up the muscle mass lol.