Probably because I grew up with BG and such, but I prefer RTWP in general. It feels faster, more responsive. However I can enjoy TB too. TB has a tendency to slow to a crawl, though. So can RTWP if you fill it with filler fights, of course. I'd take a well designed TB system over a poor RTWP one, but between a well realized TB system and a well realized RTWP system, I'll take RTWP pretty much every time.
Turn-based has to be really good to be fun. Poor RTwP will always be substantially more fun than poor turn-based.
Combat in a turn-based game can really drag along and becoming extremely boring (hence the term "trash mobs"), but in a RTwP or even a real time game, that is seldom the case in my experience.