believe it or not, some of us actually buy video games for gameplay and a star wars story experience
not for a waifu/husbando simulator
If I imagined myself as my character I am roleplaying, I would never romance Dorne or Grell. I don't want that kind of personality in a relationship.
I don't have a single romance playthrough on my characters, and I really enjoyed the platonic, friendship and sometimes rivalry, it allows them to stay in character more and remain consistent with my own character's personality. Not everything is about bad fanfic romance, go read a novel if you want that
I've never heard many complaints about Mako. And I don't think many players play TOR strictly because of the romance. For the few who play strictly for the romance storyline, I can't imagine them staying around long. It's a nice fun little side thing, but nothing more than that.