Well, I'm 36, and like Jon Feline, I agree that growing up in the 70's and 80's really was a more innocent & care free time.
Like Jon, I have seen many a fine band over the years, such as Rush, Deep Purple, Iron Maiden, Black Sabbath (7th Star & original lineup), Motorhead, Dio, etc, etc
I managed to be around when Thrash took off, so I also got to see: Slayer, Metallica (without Cliff though :( ), Nuclear Assault, Overkill, Anthrax, Celtic Frost, etc, etc.
Then Death Metal & Hardcore Punk: Carcass, Napalm Death, Deviated Instinct, ENT, Filthkick, Paradise Lost, Death, Obituary, GWAR (awesome stage show!), Anathema, Morbid Angel, Cathedral, etc, etc.
I discovered Thrash Metal about 20 years ago, and started playing bass around then as well. Tastes vary from classic rock to hardcore punk to so called stoner rock to singer/songwriters and more. Still need to practise a lot more than I do!