Most people aren't following the topic of this thread very well. It was supposed to be:
Games you bought on Virtual Console or Wii live that you got for nostalgia sake but discovered you don't like them as much as you remembered liking them.
Or probably in spirit of the thread, say:
Games you bought for retro systems due to nostalgia and found you honestly don't enjoy them any longer
So in light of this I will follow the topic and only post those:
Crystalis, for gameboy:
Wow I had such good feelings about it way back in the day but when I finally bought it for $3 at gamestop, found out I actually don't enjoy it that much.
Ghosts and Goblins, for Wii:
That game series is one of the most abusive to date and I wonder how I had the patience to sit through that game and beat it, twice, to get the real ending back then...
Eye of the Beholder, for SNES, bought again for gameboy color
Actually got through it - it uses old DND 2nd ed. rules. I can't get through the first two levels anymore without growing bored of the environment.
Techmo: Secret of the Stars, for SNES
I found it on ebay and decided, why not.. I used to enjoy that game and it was the only RPG Techmo ever made. I also had to d/l it for ROM because I couldn't really enjoy the SNES version any longer. The ROM let me give the exp for the players so they could level up fast and I could just get on with the story and building up of the town.. it still didn't age well and it wasn't then, nor now, a very good game.
Commando
I don't know if this is for Wii download but I returned to it a little while ago on ROM and found it to be 'just the same thing over and over', but it does have some secrets to find, yet they don't feel very rewarding in the long haul.