Well, it's around this time that you should probably start experimenting with different games. All of those games you have listed all seem to be well known, AAA titles. And, yeah, a lot of them can be wearisome as, a lot of the times, it'll feel like you're playing the same game over and over again. And, in many ways, you probably are. You're mind is probably craving something for just something a little bit different for once, something that will challenge you in some other way.
It's kind of like that with me and music. I've moved on from a lot of what seems to be standard and, with few exceptions, have a hard time listening to anything anymore because it just sounds the same after a while. And, not only that, but a lot of songs I used to like when I was growing up in High School are songs that I absolutely despise now. I think it's a big reason why I can't really work with a lot of people in music anymore(I play guitar) is because that they seem to always want to take the safest, most boring options while I'm just craving for something different, something challenging. But, Pandora has opened me up through different kinds of music and I'm starting to realize that maybe I just like the soundtrack to movies or video games kind of music. The soundtrack to Skyrim is absolutely gorgeous on a lot of parts. Also, there are other musicians willing to experiment and try something new that I might like. A lot of the times, what they try to do won't always work, but, sometimes, I can find something really cool.
And, it's exactly the same way with games. When you've played so many, especially coming from the AAA industry, it does all start to seem the same. There are exceptions from the industry, I've been pleasantly surprised(I did actually really like Bioshock Infinite and I was surprised how fun Assassin's Creed 4 was especially after the giant mess that was Assassin's Creed 3). But, a lot of the games that I really like come from smaller developers who are willing to try something different. FTL is an example that comes to the forefront of my mind, as I find it a more immersive experience than the most highly advanced, highly detailed games(Like Skyrim) that I can think of playing. Sure, even indie games can rely heavily on a safe route option and maybe even just rely on nostalgia with a certain gimmick, but there are other developers who are really willing to try something different.
It's just time to try something different.