Who the hell knows why?
I usually just give him a pacifier and try to get it over with as fast as possible. However, Papa Ron has a pretty strong aversion to Griffin crying. I'd say he feels about the same way about Griffin crying as Griffin feels about getting his clothes changed.
So, I came the in his room the other night and Ron had found this unique solution to Griffin's new aversion to the changing table. Ron was (slowly) changing his clothes while Griffin rocked in the rocker.
The things we do for babies. :)