I like the idea of dubsteb more than I like most of the dubstep I've heard. I'm in my early 50s, but even so I got into a lot of harsh styles of music early on - 80s industrial, for example, and then through underground experimental networks, things like harsh noise or wholly abstract works. So you'd think a chaotic mash of overdriven oscillators with stomping beats ought not to be outside of my range of things I like. I've even considered doing some music with dubstep-like elements myself. But like any genre that gets any following, there comes a point where it becomes formulaic. I just haven't found an artist (yet, I'll allow that it might happen one day) that makes me sit up and say "I need to have more of that".
And this is not to say that I cringe or recoil whenever dubstep crosses my path, I can listen to tracks and not be immediately compelled to change the station, it's just that none of it goes beyond that - nothing gets a second listen. I have a couple Skrillex CDs that I got for way cheap at the used CD place just to see what all the fuss was about, and I don't think I've played them more than a couple times. I'll nod my head along to the beat, and then it's done and whatever's next comes on and the thing I was just listening to gets consigned to the memory hole.
This could be also be said about most music on the charts these days, though, so make of all that what you will.