I typically let a pilot do its thing. I've seen a lot of pilots, and a lot of the time it's just like "OK, that was neat, not really interested in seeing more" but sometimes I get hooked. Of course if I see people raving about something I gave up on quickly, I'll sometimes reevaluate.

It got a lot easier once I gave up "having" to see a show all the way to the end once I'd started, which I gave up on because Glee and Once Upon A Time both crashed creatively in their second seasons then went on for YEARS more.