I think that Nicole below nailed it. Anything that is experienced or enjoyed by the majority is going to be what you see in mainstream society. I suppose I should include things not enjoyed but that have become general social expectations that people in general are not willing to work to change. But in any case. Anyone, who does not fit a majority expectation is going to tend to feel isolated or marginalized on some level. Conforming to a "norm" (hate the whole "normal" thing, there is no such thing) is a way to feel accepted by a social group. If we feel we meet the norm, we belong. It allows us to know who is in the "us" group and not the "them" group. It is, to some degree, an evolutionary trait that helps us survive. Or at least it was. As we became more accepting, and as we move up the list of maslow's hierarchy of needs, we should theoretically have less need of the desire for conformity as a way to feel we belong. But unfortunately, the majority of people are not smart enough to understand things like acceptance of people with different experiences, regardless of what that different experience is. If you are in a room of sports fans, and you don't like sports, you are not "us", you are "them", and so need to be shunned or shamed for your difference. Pick any significant difference from the "norm" and you are "them". Pretty sad, but no way to change it. Glad you have at least some coping mechanism. The only real answer is to surround yourself with open minded and accepting people. Hard to do sometimes. I would give a platitude about just ignoring it, but we all know that it is easier said than done. We all just want to be accepted for who we are, even with all our differences, but sadly it will never work that way in our lifetimes. But it is still true that there are a decent number of people out there that can, and do, accept others who are different. You just have to find them and add them to your life. Good luck.

We live in a world where most people are not asexual. Of course sexuality is going to be represented in everyday culture. I've never really looked into it, but in music and film, I expect you'd find more exposure to romantic interest than to sexuality per se. I certainly wouldn't say that sexuality is everywhere I look, and as some living outside of the cishetero norms, I tend to notice overrepresentation of heterosexuality and underrepresentation of homosexuality and bisexuality.

I have absolutely zero interest in sport. And yes, it does annoy me when people talk about it inappropriately (e.g. in a work meeting that I can't get out of, or miscategorising their post on a forum so that my filters don't hide it.) But I don't expect culture around me to give up making references to sport. Live and let live. I will just do my best to ignore it.

Perhaps there is more room for asexual cultural representation. The assumption that everyone must have a sexual interest in someone else is something that needs to be challenged. But I would liken an expectation to desexualise society to a trans person not just demanding that people respect their gender neutral pronouns, but that everyone else starts using gender neutral pronouns too. It's one thing to expect society to adapt, to recognise and embrace you. It's an entirely different thing to expect society to suppress its own interests and identities, just to placate yours.

I am sorry to hear this. I have a friend who is asexual. I don't know how he copes with it or what his struggles are. He is pretty reserved about it and doesn't talk much other than to say he is asexual when a sexual topic comes up. I understand that to mean he doesn't enjoy sex and therefore has no frame of reference to the current conversation so I do my best to steer back onto non-sexual topics.

I understand asexual but what is allosexual? That's new to me...