I hide and hide my profile for reasons that have nothing to do with dating. Work or school get busy, I have multiple projects going on, I have to travel, etc. Sometimes I'm just exhausted of it and need a break. I think I'm had my profile hidden for over a month now. I was in some casual messaging with a couple of men on there. If a guy doesn't pique my interest enough to want to take it offline within a day or two, then it probably won't happen.
Aziz Ansari had some interesting thoughts about online dating in TIME magazine. Actually it was his comic take on the scientists that he worked with. Worth a read:
Aziz Ansari: Love, Online Dating, Modern Romance and the Internet