Emily's Cat
Rarely prone to hissy-fits
It's called "Earth".
Seriously, next time you go to the grocery store, look at the cashier, for example. Does the cashier who checks you out express to you whether they are heterosexual, homosexual, or something else? Because I don't think it's ever happened to me. Oh, I might have my suspicions, but I don't actually know. And sure, I do see public expressions of sexuality, for example couples kissing in public. But constantly? Yeah, no. Not even close.
The one area of everyday life where sexuality does actually come up is in fairly common conversations, with friends, relatives, and coworkers.
It's not at all uncommon for heterosexual people to talk about what they did over the weekend with their "boyfriend" or "girlfriend", "husband" or "wife". They don't generally go into detail about their sexual practices, but people very frequently refer to their significant (or insignificant sometimes) others in casual conversation.
For heterosexual people, nobody bats an eye, nobody even notices. And for homosexual people, it's become a lot more accepted and common to hear a gay male talk about their "boyfriend" or their "husband", and similar for lesbian females. But there was a time not very long ago where a great many homosexual people didn't feel that they were free to have the exact same kind of conversation that heterosexual people had without a thought. Because when they did, it drew attention to their sexuality, it made their sexuality an issue in and of itself.
That's still probably true in some parts of the US, and it's certainly true in a great many parts of the globe.
I will say, however, that there's a pretty stark contrast between this kind of conversation and other kinds of 'sexuality'. If a person is into diaper play or other fetishes or unusual sexual practices, that's NOT a normal part of every day conversation, and in my opinion, it shouldn't be.
I also have to confess that I do not at all understand any need for awareness of asexual people. Nothing prevents them from talking about non-sex things they do with those they care about already, and I don't see that there's any good reason to make people aware of the sex that they're not having. That one just really baffles me. I mean, I genuinely do not care if a person is asexual, that's perfectly fine, there's nothing wrong with it, and it doesn't matter. I just don't see why that needs to be a topic of discussion of any sort at all, except in a very very few situations.