I find the floor uncomfortable, but in my case, it makes the best sandwich. So I crack open a glass of wine or take an advil, throw a pillow under my knees and deal with it. Of course, I haven't done anything larger than lap sized, once I get to queen or larger, I won't have a big enough space on the floor to work with. :)
As far as hating it, well, let's just say it is my least favorite part of the quilting process!