Star Trek movies have have been going strong, with occasional ups and downs, since 1979. Why stop now?
If you look at the "Earliest Star Trek Memories" thread in the "General" category, you can see how every Trek movie is somebody's first. Deciding that "okay, we've had our fill, you can stop now" strikes me as generational chauvinism at best. Let future generations of Trekkies have their fun, too.
And, for those who want to turns this into yet another referendum on the latest flick, did you want to shut down the whole franchise after TFF or NEM or whatever your least favorite Trek movie was?
With any luck, STAR TREK will outlive us all.