I for one appreciate that the companions are playersexual. I like the greater choice it gives me. I don't enjoy being locked out of a romance because I'm playing as a male character, or because I'm playing as a halfling.
In the real world, there are all sorts of reasons you and another person don't click: sexual orientation, chemistry, level of physical attraction, etc. But there are also billions of people on the planet, and the chances that you can find someone who you do click with are much higher. In a fictional game world, where there are finite options in terms of romance, I'd much rather be able to pick from all of the available choices. That way I can make sure I'm pursuing a romantic storyline with the character I most want to pursue, rather than just the one I'm forced to pursue because they're all that's available.