Not so much "changed" as "adapted". I grew up on Super Mario and later, Wolfenstein, Heretic, and Doom. I've always been a closet steampunk/ fantasy fan so was automatically drawn to Castlevania. This also led me to Final Fantasy and JRPGs in general, with the first I really played through being final Fantasy 6. I probably beat Chrono Trigger more than half a dozen times and not just to get all the endings but because the game was that good. As tech evolved and genres changed, I wanted more freedom so moved to more action-oriented fare. Through 3rd person adventures (Tomb Raider, Uncharted), phallic nightmares (R-Type, Silent Hill), shooters and their revamps (Doom, Wolfenstein, Unreal, Tribes) games have become more open-ended and cross-genre than ever.
What I play now is whatever bores me the least because I've seen so much game that it's difficult to surprise me. I play ESO for the freedom to do whatever, wherever and housing's next week so I need the gold. I play PSVR so that the world around me disappears plus some of the games are quite literally rides, which is great because the parks are closed. I play The Witcher 3 because it's gorgeous! I play Diablo 3 on PS for the coop, a feature sorely lacking in modern games. I'll soon be playing Resident Evil 7 and I hope that it at least gives me that same tingly feeling I first felt in Silent Hill, and later P.T. I'm in an on-again, off-again relationship with Inquisition, a game I've beaten once already but wanted to go again using a class I was less familiar with, thus upping the difficulty and possibly tweaking the plotline.