PS3?

So lately I've been thinking about getting a PS3 because there are a few games that are only available on PS3/4 that I really want to play. One of which you may already know, The Last of Us, and the other is Beyond Two Souls. I've been debating about one because if I'm only getting two games for it then is it really worth getting? I can see myself enjoying them immensely but once they are completed then it will just sit in the corner gathering dust, unless a new game comes out which is exclusive to PS3/4. I would like to know what you think I should do......