i had owned a few guns by the time i was 21, a couple inherited from my grandpa, and a couple given to me by my dad (so he could see me enjoy part of my inheritance while he was still alive).
the first gun i bought on my own was shortly after my 21st birthday. the day after, i believe. i was raised entirely on revolvers as far as handguns go, so i wanted my first handgun to be a wheelgun.
i looked at and handled a few guns, before a shiny new Ruger GP100 in stainless caught my eye.
i still have that gun, and don't plan on getting rid of it.