What do you think of using facilities not built for my size
It sounds strange. Why would you do that?
I can't stand the useless discrimination we have, we need to build things that makes sense to everyone
You should not use things that were not designed for you. You could get injured or hurt someone else using them wrong.
Nah, I'll use them anyway, nothing else fits me. I'll survive.
It is too dangerous. Things are made with specific requirements and using them when they are not for you could damage it or cause you an injury. If there isn't an appropriate one for you then don't use any.