If anything, it's made me appreciate Nintendo more. There are many fantastic games on other consoles, and I did start to lose my love during the Wii era, but following the 360/PS3 which started to burn me out on gaming in general, the Wii U and 3DS brought me completely back. Nintendo's output over the last 4 years have showed me what gaming really is. While the games on the other consoles are technically good, they just didn't exude the joy Nintendo did and that's why my love of gaming started to die.
That said, a sequel to Red Dead Redemption would get me to finally drop cash on a PS4 in a heartbeat.