What Pushed or Will push you to Buy each next- gen console? Have you enjoyed it so far?

[Ouroboros24]

I buy all the systems.  Why not?  If your a gamer and you like variety, it's best to have all current consoles.  Excluding your backyard consoles like the ouya.  Common, I don't want to have to buy a new system, 3 is enough every generation.  Along with portables....