Speaking as an upright bike rider, with road bikes although nothing like a "racing type", I see nothing wrong with recumbents at all but I just don't want to ride one and neither do the vast majority of cyclists. Not wanting to ride one is not the same as hating them. I don't want to ride a unicycle or a fixie but certainly don't hate them.
I ride recumbent bike, upright bike and Brompton. I think I'd like to give most bike tpoes a go but I'll stick with what I've got as they fulfil my needs.
I've tried a unicycle, off-road one, but it's not easy to learn off-road so I called it a day. The guy who owned it was amazing rider of his unicycle. Not bad for a just below knee amputee.
I've never ridden a fixed, it kind of scares me the idea that I might be stuck going downhill with the pedals flying round because I was not fit enough to stick with the rpm needed! I do fancy having a go.
Nothing wrong with trying cycle types out of curiosity. However, doesn't mean I'll ever own them all.
One thing I'll not try, competitive cycling! Never had any interest. Perhaps someone on a racing forum is asking why do recumbentists hate us racer boys? Reading the OP it could seem be a valid question!