A perspective that I think doesn't get enough exposure is that we're talking video game characters, and entertainment.
- Videogames are different (because they're interactive)
A variety of perspectives (and MCs) are present in TV shows / movies / comics / books, but the key differential here is that you're kind of viewing the action and asked to empathize with the characters. A key point in storytelling is that if the character doesn't care about something, the audience won't either. And so, asking why you don't care about the particular struggles of a fictional character doesn't necessarily just come down to you being a sociopath. Admittedly, I think there might be some area worth exploring there in terms of self-development, but I think the idea of labeling you as anything because you couldn't connect with a fictional character is stupid.
I don't recall a lot of people having problems with the JRPG approach, which is you inhabiting a role and kind of watching the story play out. Because you understand that these are roles, and not meant to be a representation of you, then I think playing as someone not yourself is a lot of less loaded of a proposition.
The western tradition of RPGs (ficitional version of you in the world, more self-empowerment) has bled over to so much of modern videogaming. No longer are you inhabiting a role in a play, now you are the character and they do a lot to try to get you view yourself as the MC. In Mass Effect, for example, no longer am I watching Shepard get his groove on with his partner of choice, now I'm Shepard.
And my version of Shepard isn't interested in certain things (like kissing a dude). Not that I don't think that it should/shouldn't happen on screen with other people (which I'm fine with), just that if you put all this work into me being Shepard (analog for myself, fairly blank character as per WRPG tradition) instead of playing the role of Shepard (like a role in a play or TV show) and then go 'why don't you want to do this?', its largely because I wouldn't.
That's a fairly thorny problem to solve, because I definitely think that stuff should exist. Everyone should feel like they are represented in games (hopefully in a positive light as well). As an autistic person, I cheered for Abed just because he was the first autistic character in a TV show that wasn't the weirdo, or the sociopath, or viewed as anything other than a person who worked differently, but still had interesting and worthwhile things to say and do.
But there's just so much out there in terms of entertainment that trying to judge anybody for not being interested (or for said thing falling down the list in favor of things they are more interested in) more often says more about the person doing the judging than it does about the person making decisions about their entertainment.
Here's my reason for not being interested in things that I can't relate to. I'm autistic, I don't naturally relate to anybody (in terms of socially). Between going to school, dealing with doctors/specialists, trying to socialize and expand my social circle to more than just me and my extended family, trying to deal with the baggage of being told for 26 years it was all in my head (and my life crumbling around me when no one gave a damn about actually listening to/helping me), I'm exhausted at the end of the day. If you presented me with a game where I was to play a girl romancing a dude, its not that I wouldn't do it, just that looks like work (in addition to it being even further from relating to fellow heterosexual men, which I have difficulty doing in the first place). What I want is entertainment, so I would take that, and then go in search of experiences that I would find entertaining (which does involve white male protagonists who I relate to easier because at least I look like them, even if I can't relate to anything beyond that ).
But everyone deserves to have entertainment that they can enjoy, and I totally get why having someone who looks like you or that you can relate to is important. But I do try to keep in mind that while being able to relate to people is important, relating to people (even fictional ones) is also work. The further the fictional person is from who you are, the more work it is. Skilled writing can reduce this workload (as can a variety of things), but its never no work. And should someone decide that they'd rather go for something they can find entertaining, I can't really fault them for that.