Overall I don't think I will sell my console, although I feel a little financially irresponsible for not doing it. The reason why is because if I don't sell it it will likely be used very rarely once the next gen comes out, or I could sell it and make a few hundred bucks on it and my games. I have a lot of old stuff sitting around that I wish I would have sold when it still had some value. Old computer, old phone etc.
I really wish the xbox one and ps4 were backwards compatible.