I used to like Shiner Bock and Negra Modelo, back in the day. They were okay, but just okay.
However, it's been years and years since I've had a mass produced beer like Bud or Miller. I can't remember the last time. Life is just too short to waste my limited beer space, my limited beer time, in this ever shortening life, on that stuff. If that's being a beer snob, so be it, but it's just a matter of taste for me.
The choice between a mass produced beer vs a microbrew (preferably on draft) is like choosing between a bama pie out of the vending machine vs a homemade fruit pie by your grandmom (or her recipe anyway, and I did learn how to make a respectable pie crust from my grandmom). I mean, in a pinch I'll eat the bama pie, but given the choice, give me the homemade style. Give me the craft brew. Give me the true good taste. Life is too short for the swill. Sorry.