That's kind of the point. The last one was 15 years ago. That's not that long ago.
If you think the idea is fun, make a sequel. I think that's still par for the course for how unoriginal Hollywood has become, but at least that takes more effort than a lazy remake/reboot.
It's definitely par for the course. Hollywood has been regurgitating the stories since the day it opened for business. Tapping and re-tapping the same stories and ideas is not a new phenomenon.
I do take some issue with your time argument:
Star Trek (2009) came out 7 years after the last Trek movie and 18 years after the last movie with the original cast. (technically a sequel given its events, but really a reboot Trojan horsed into a sequel, which was clever).
Batman Begins (2005) was eight years after Batman & Robin and 13 after Batman Returns.
Hell, the entire James Bond series has been rebooting and reimagining itself every 10 years or so since the early 1960s.
I didn't hear a lot of bellyaching around these parts about those ventures.
My point is - I don't think people around here really do hate reboots/re-imaginings/remakes in general, they only hate them when it involves actors/directors they don't like. I really enjoy the Oceans movies, but it isn't like it's sacred text.
Posters decry the lack of imagination and creativity in Hollywood yet happily line up for predictable assembly line super hero movies (many of which I like as well!).
My personal stance is -- Who cares?
A remake does not in any way diminish the version you prefer. You can still watch that one, nor do you have to see the remake/reboot.
There are much greater affronts to entertainment than someone looking at a fun movie and saying, "hey lets make a new version of this fun movie."