Meh, depends. Having a lot of geography is boring if there's nothing meaningful to do in it.

To me, Open World isn't a style or genre. I believe it is just that developers are able to make games in a way that they've always wanted but couldn't due to hardware limitations. With that being said, I love what everyone's doing with this "style" of gaming. It, in a way, it makes the player more engaged because, it's that much closer to a believable world.

I think open world is fine when there are secrets and useful stuff to find in the world and when the  main missions and sidequests are not repetitive or pure collectathon...

I'm not a big fan of OWG but if it helps keep the industry healthy, I'm all for it.

Far Cry is open world AND an FPS, so it's not really fair to count it towards only one of them.

I play 1.5 hours every few days, and with open-world games it just gets me nowhere, I start to forget what the game was about by the end of second week. I'll probably wait for MGS5 and abandon AAA gaming for good, they have more money than ways to use them.

Depended what you class as open world. What I typically think of as open world games (the GTA's, Skyrims, Fallout 3's etc) tend to be very hyped, and sometimes well received, but they're never my favorite kind of game and normally, for me, disappointing.

I think one reason is they tend to fail at exploration. Exploration is one of the things which they often promise (or at least suggest) they'll be great at. But gameplay can consist of following waypoints and take a slightly different routes through an ally to find an incidental secret that make little impact on the game. Compare that to the secrets you find in Zelda, Deus ex, Quake 1, Mario 64 and countless other, often old, games.
Engaging and meaningful exploration is out of fashion in third party games and have been for awhile. Despite offering vast open areas, modern open world games do not fix this.

If you class something like a 3D Zelda as open world, which has a more contrived experience (and I don't mean contrived in a negative sense) then I love open world games. Deus ex isn't open world but one of it's strengths was its large open levels.

I love open worlds and I'm happy if there are more open world games, but if a game can be better without them, then by all means devs should avoid forcing an open world in that game.

I dont think it will take over. If you take out GTA5 numbers then it really isnt all that impressive and they only make 2 of those per gen. And it takes longer to make those kinds of games.

Like others have said I wouldn't mind the trend if there were things to do in this open world and not just mindless exploration.