I'm starting to love this word, "asshats", or for me, "arsehats".
Exactly my experience. After our wing chun school shut, a few of us along with other friends started a little MMA group where we would cross-train with BJJ, Thai Boxing and Judo guys. We had about 7 of us and would rent cages and get so much done with little injury other than natural soreness.
With interest to compete, and with others hanging up the gloves having kids, moving away/on, I joined my closest and most reputable MMA gym. Credit where it's due, the instructor teaches good stuff and over this whole period, I became a much more rounded fighter. However, LESS than 1/4 had control. One guy rolled over on my arm so hard he nearly snapped it off. Then new guys would come in who "used to box" and then treat sparring like it was a UFC main event.
Therefore, I kicked a few people harder than I should have then decided to leave. I never made competition because I was often to injured to train.
If I had the mindset, I'd push through the pain, carry on and try and get a competitive fight in or two. But is it really worth it for maybe a photograph of a memory which may later be lost to some sort of amnesia anyway?