It's an entertainment medium and different people find different things entertaining.
There's also a huge variety in what people consider a 'good story'. In most media there's often a disconnect between how well written fiction is considered to be by critics and connoisseurs and the size of it's audience.
Personally, I love a 'good' narrative and characters as much as I love 'good' gameplay, so I loved the Walking dead games despite extremely poor gameplay, and Mario 3D World despite it's story being just crap.
Then there's the ideal, games that can marry both narrative and gameplay together perfectly, stuff like Bayonetta that's got as ridiculously over the top writing as it does gameplay, which is a perfect storm of camp extremity on one end, and games Like TLOU and ME2 that weave their plots, characters and gameplay together perfectly to bring about an experience unsurpassed in any other medium on the other.
Really I think there's a sense of snobbery over narrative amongst game enthusiast, partially down to nostalgia, where for years most games were considered to have little to no gameplay whatsoever, and because that was many people's formative experiences, they now think those games were a better, more pure experience for it.
This of course ignores the fact that adventure games and such like were some of the first games ever made, and that by modern standards most of that old 'pure' gameplay is utter, unplayable wank.
It doesn't help that Nintendo Devs are of a like mind on story either. It adds a lot of strength to people's convictions when guys like Miyamoto keep saying stupid things along the lines of 'games not having anything to learn from movies' and the what have you.
Ultimately though, it comes down to taste. Some people just want the pure gameplay experience of games like Candy Crush, others just want an interactive story. Most people fall somewhere in between.
Personally I just want a greater variety of stories. Where's the tense psychological thrillers, the whacky comedy crime capers, or hell, even the soap operas? There's so much you could do with narrative in games that would be impossible anywhere else, yet 99% of the time it just boils down to an action and/or adventure B movie plot.
Which also doesn't help with people thinking gameplay is more important than story either. It's easy to dismiss something as inferior wen it so often is inferior.
I've never understood why people care so much about stories in games. Games are first and foremost, a game. Having a story is nice, I guess, but I don't play games for their stories. I play games because I play them for their gameplay.
