Imo i think that the gtx 970 had good longevity and if you like the card that's great, but i started to see games recently where gtx 970 started to struggle (final fantasy 15, shadow of the tob raider) and now i'm seeing titles like anthem(recent beta tests) and Metro: Last light(at least from what the specifications look like) where the gtx 970 is showing signs of aging. That and I wanted to try out 1440p
