I started watching a couple of months ago, and stopped because of the immaturity of some of the characters, and slow progression of the cool sci-fi/time travel stuff.

I decided to burn through the rest and was surprised to find that the mundane activities at the beginning of the series actually play a much larger role than the writers let on.

The characters become a lot more likable later on too, most notably Okabe, since he has to deal with a lot of difficult decisions related to time travel.

The latter half is surprisingly pretty emotional, and the series as a whole takes some interesting plot turns. If you like sci-fi and anime you should at least give it a shot. Things really start to pick up around episode 10.