I don't get it.
No really I don't.
So many people choose to romance whomever. However Solas romance seems to be quite popular.
I don't get it.
I am scratching my head as to why it is so popular.
No..LOL! I' am not chastising anyone for choosing this romance.
I just don't get it.
To be honest, I'm a little surprised as well.
I mean, I know why I like him. I love intelligent, thoughtful, introverted, nice, polite, scolarly types. I'll admit I was a little put off by that bald noggin, plain clothing, and seemingly plain personality before the game came out, but I figured, "He must have a great personality if BioWare feels confident putting him out as a romantic interest." Lo and behold...! 
As for why he's so popular, I'm a little surprised too. He's not conventionally attractive, all things considered. He's not flashy or dashing as some of the others (even Zev and Fen). He also has the greatest amount of restrictions (female elf only). I guess the fact that he's an elven god helped a ton, but lots of players also swear they didn't know he was a god when they pursued a romance, and we still occasionally get heartbroken players come to lament Solas dumping them, and surprise that he turned out to be a god after that. So, eh. *shrug*
Is it just me, or do Solas and Cullen romancers often go hand-in-hand?