Why, I ask? Why?

[Chainsawmidget]

And low-budget movies often have a purity of vision you don`t see in big studio pictures. Not so many cooks in the kitchen, trying to fix the movie or make it appeal to everyone. The people who made these films knew what they wanted to make and who they were making it for, and that was good enough. Hollywood movies today are so over-engineered to squeeze out every last drop of potential income, they just have all the life sucked out of them. Give me the days when Roger Corman would give some promising young director a budget and a deadline and then turn him loose.

I'd agree with that.  Lots of B-movies are just more pure to the artists vision, even if the artists vision was nothing more than "let's show some tits and people getting killed."  It's a more personal project for those involved so they put more energy into it and it shows. 

[the ghoul]

I agree with the above comments, and there's also the simple fact that the "bad" or "crappy" movies are just plain better than the movies most people like.

Strange, but true.

[alandhopewell]

     As the one who dug up this thread the first time (and again, now), let me add this....
part of the appeal, I think, is a response to the very absurdity of modern life. Sorta like Sidney Freedman's famous quote....

      "Anger, turned inwards, is depression; anger, turned sideways, is HAWKEYE."

     We laugh at the absurdity of these films because we cannot laugh at the absurdity of the world around us. The horror is too real, and the victims can't get up and have a beer when the director hollers, "CUT!"

     Cheese gives us a way to vent; else some of us might wind up like the guy I worked with , of whom another worker said, "That boy's got a water tower and a rifle in his future."