If you're someone who goes to the gym to actually workout then there is nothing wrong with this
Well I do agree the locker rooms are not the cleanest they could be, I know that can be pretty unappealing to some people. Plus most of the trainers walk around with some sort of chip on their shoulder, for what reason I don't know.
But regardless if you're someone who goes to the gym to train then suck it up, put in your headphones, and go train and not worry about dirty bathrooms