I tried making a Reddit account and it asked me to build karma before I could ask on any of the relevant subs so I'm posting here.
I can personally say that if anything goes up there, it hurts, and not in a good way. It does not feel pleasurable at all. It feels kind of like placing a finger on an open sore and pushing down.
Also, if you're being examined, they tell you to take deep breaths, as if they know that anything going up is going to be painful. If sex is supposed to be pleasurable and enjoyable, why would doctors tell you to brace for impact, so to speak?
Lastly, women often scream during sex. It's often said they're screaming out of pleasure and not pain. But there are a lot of things I find extremely pleasurable, but I don't scream while I do them.
Is it just one of those things that is painful but we're conditioned into believing the pain is actually pleasure and I must have inconsistent pain tolerance and I am making a big deal out of this?
Your vagina might be reacting like this because you just don't want to fuck
Yes, arousal does seem to reduce pain, this is just a somewhat insensitive way to put it. Finally someone mentioned asexuality, as opposed to lesbianism, which definitely wouldn't stop OP from enjoying sex.
Just a heads up to OP: it's none of our business what arouses you unless you want to discuss it, the "you're gay" comments are very inappropriate and should be reported. I'm not asking or making conjectures about your sexuality but be aware that lust and pleasure from sex is a normal sensation in most people regardless of gender. Willingness to participate in sex (or masturbation) and the resulting sensation is dependent on the gender of your (imaginary) partner, technique etc. and there are safe ways to experiment. Bodily responses can often be adjusted with therapy: if you're not satisfied, ask a doctor; for example, feeling overwhelming pain is not healthy and you should stop and look for different techniques or exercise to reduce the adverse reaction.