I grew up with PS2 and for me that was the ONLY console that existed. I played games intended for young people, I played whatever was thrown at me, never did I check on the internet or anything if it was any good. I hammered games like Ratchet and Clank 2 and Simpsons Hit and Run, and many others games intended for that age group, and I played for fun and completion.
Then the first mature game I ever played, when I was about 9, Metal Gear Solid 2. Didn't understand shit, couldn't even play it without a walkthrough, the first walkthrough I ever used. But I loved it and finished it. I subsequently bought MGS3 about a year later and it's since been my favourite game of all time.
Unfortunately, when I got to secondary school, I found out about all these other games that people were now playing. I bought a PS3 and for a couple of years bogged myself down with mindless FPS's and other new releases. I don't regret getting a PS3 because I've enjoyed a lot of games, like Fallout and Portal, but it's the peer pressure I faced which caused me to play stupid games which changed my perception of games in general. In a way, I think I was fairly closed-minded about gaming then and with the introduction of multiplayer, wasted so many hours.
In the last year or two, when I took an itnerest in retro gaming, I actively looked up games from all different consoles, NES, SNES, N64, PS1, PC, PS2 and PS3 - some bought, many emulated. I've been much more open minded about series I'd never played before, most notably Legend of Zelda, and also expanded upon series I already knew by finding more games in their series. I don't really bend towards new releases, unless I personally want the game that badly, and I hold no prejudice against graphics, release dates or reputation. I also mostly disconnect my personal gaming from the attitudes of others around me, although thankfully I have some friends who hold similar views as me and we share game discoveries and tastes frequently.
I also lost a lot of interest in multiplayer, unless it was mandatory like TF2 or a really good splitscreen. I'd come back to prefer playing by myself and a lot of games I have are outdated anyway.
Just like when I was younger, I'll try absolutely anything, but with the internet and a little less naivety I just know of more games than I did back then. Shows what a difference in taste peers can make you have, but I'm past that now.