Everytime I watch a television show on my TV, the subs are always on. Mainly, because I don't know how to turn them off. Lol. Some people also use subs for English spoken shows during the nighttime when everyones asleep. My parents get mad if I turn the volume up on the TV while they're trying to sleep, which is why I love to put english Subs for English-spoken TV shows.
Anywho, I think it depends on the Anime whether or not you want to watch it in English with no subs or in Japanese with English subs. For me, I'd rather watch the English versions, only because it's my first language and I don't know Japanese. But, as I've said, it depends on the anime. Like, if it's Naruto: Shippuden, then I'd watch it in Japanese with English subtitles and not have a problem with it.