That's the feelings right? What's wrong with enjoying your creation right?

The song that I wrote has more values because it carries memories, emotions, and my internal state. I'm not saying other songs doesn't have values. It's just harder to resonate with, unless the melodies or lyrics align with my emotional state.

I listen to my own songs because I am songwriter, and still am even when I stopped doing it professionally. I am not doing it for the sake of "I just want to listen to my own songs and I will never listen to others". I listen just because "This song is meaningful for me"

And the "this song" in that quote above, can be mine, or other's.