This thread reminds me of back when I was in middle and high school. Pokemon came about around the time I was in 6th grade and me and other peers of mine. However, I went to some pretty tough school. Not "tough" as in ghetto but "tough as in, one is pressured to act "cool" and whatnot and liking things like Pokemon was seen as uncool and dorky; it's not like today where liking things in geek/nerd culture - and being open about it - is cool and not looked down up as back then, one had to look like they were too cool for that sort of stuff because otherwise, you'd be ridiculed and made fun of (so one either had to give it up under peer pressure or just not openly talk about it to avoid bullying). Unfortunately, this happened to be during 7th grade and though I knew of others that did like Pokemon as well, the ridicule would happen anyway.
I'd be lying if I stated that this didn't have an affect on me; yes, I still was playing Pokemon games up until Gen 3 and yes, I had left the franchise - both the games and the anime - by the time I was done with HS as I was about to start college (meeting new people and getting involved in extracurricular activities) and had a general sense of growing out of Pokemon (at least at the time) I can't help but think that the ridicule from a few years back may have had a subconscious effect on me years later (though I never once started acting like I hated Pokemon). Now that I'm older and a bit wiser, at this point of my life I couldn't care what anyone else thinks. I came back to playing Pokemon games after thinking back to those times that I did - despite the fact that I'm at a different place in my life than where I was art 11+ years ago - and it's awesome to see that Pokemon is still around 20 year and 6 generations later (soon to be 7).