The preference for one mass-produced beer over another has to mainly be connected with advertising and brand identity. There just isn’t that much difference. That said, I like Miller over Bud, and Pabst over Miller, and Rolling Rock over Pabst. But really there isn’t much difference; I think I like the advertising/bottle better, so the beer tastes better to me if its in a Pabst can than if its in a Bud can.
As for micro-brewed beers, they’ve managed to acquire an effete image, kind of like wine drinking. And they’re similar to wine, in that the styles and tastes vary so widely you have no idea what you’re referring to if you make a statement like “micro-brewed” beers. I don’t see how anyone could like them all, and if you like mass-produced beer there’s bound to be some style of micro-brew you’d like. It’s ironic that micro-brewed beers have acquired a highbrow image, because if you brew beer at home, it comes out a lot closer to micro-brew than Bud. I can’t imagine HOW you’d home brew Bud. But it’s simple to make great ales and wheats and porters in your own kitchen (but I don’t anymore because it’s easier to just go out and buy them now).
Drink what you like. Life’s too short. One of my favorite beers is called “bourbon”.