Some boxes are ok for maybe trying some new shit, but in the end, rails are far more superior. But... more people can hit boxes so I guess theat's the market. It's odd, too, since boxes are usually considerably more expensive to produce.
They get pretty annoying though, especially in comps, when people just spin like a top and people think its "cool" when in reality its pretty novice. It's akin to the whole thing how gapers go fucking nuts when somebody does a backflip, but are rather indifferent on other things, ie switch corks.