Ok I love Glee like most people (except for my brother, but whatever to him, it's his loss). I love Glee because whatever mood you are in there is a song for that.
Such as, if you are feeling alone, you have Finn singing "I'll Stand By You." Or if you are crushing on your teacher you have Mr. Shoe saying, "Don't Stand To Close To Me." Or you don't want anyone to rain on your parade then you have Rachel that you can sing along with.
So whatever you are feeling and need a pick me up song or a comfort song, I am sure that Glee has something for you.