Romances in games are always going to be tricky regarding this, imo.
The reson some people might like Herosexual or Playersexual romances is that for people who generally don't see themselves represented in other games with regards to their sexuality, being able to flirt with and romance whoever you like, without facing rejection, can be freeing.
On the flipside, it's just not realistic. In real life, everyone has their preferences, sexualities and other reasons for being attracted to who they're attracted to. It's hard to get immersed in a world where everyone likes everyone, and has no preferences. But some people don't give a shit about realism in this regard, so it all comes down to preference, hah.
Honestly, in my opinion, playersexuality is just lazy with regards to representation. As a member of the LGBT community, I think that going "Oh you can just fuck anybody!" does not solve the issue of meaningful and well written LGBT characters in gaming. Instead of basically erasing all sexualities, why not make some straight characters, some gay ones, and some attracted to all genders. This is something Dragon Age did (in the first and third game, at least), and the romances in those games are extremely popular.
Also people are just going to create mods to get with whoever they want anyway, so in the end it doesn't even matter lol.