I'm hosting the session this month. See here for the topic.
When I first started drinking beer (about ten years ago) I liked lager. And not good lager, probably one of the c-words. Price wasn't the issue but perhaps lack of having tasted anything else was. My parents bought me a pack of twelve for Christmas in October and by December I'd decided I didn't like lager after all. I moved on to Worthingtons smoothflow. I drank this for about three years, including for my first year at university, by whhich point I'd had my eyes opened about the world of beer.
I don't feel particularly guilty about my formative beer drinking experiences, in the same way as that Linkin Park album led me on to much better music, those generic lagers and bitters pushed me to seek out better tasting beers and in the mean time I've found plenty that I'll happily go back to time and time again.