Hulk Hogan turned me off of faces, around the buildup for WM 8. I knew that he screwed Sid Justice out of the WWF title, and hoped Sid would get his revenge and destroy Hogan. But in one sense, I was still cheering for the one who I thought was right, so it might not count. Sometime around 91 or 92 I started to cheer the guys I liked, whether they were "good" or "bad". That included Vader and Cactus Jack in WCW, and mostly faces in WWF still, but I did like Bam Bam Bigelow and for some reason, Ludvig Borga. Probably just because he was from Finland, and I always cheer for the Finns when Canada is out in hockey - unless the Finns beat us. By the time the Attitude Era rolled around, I cheered for just as many heels as faces.
I do remember always cheering for Demolition though, until their last feud with the Hart Foundation. I'm from Alberta, Canada, so anyone who had beef with the Harts I loathed.