Glee most certainly isn't the smartest show on television, and the characters are definitely aren't the most creative.
And yet, it works. I've heard of Guilty Pleasures
before, but this is the first one I ever got attached to. Why? It's bright, exuburant. Something is always happening, and the characters are involved in a rapid moving web of hilarity, heartwarming, and fun.
It's true it's not realistic, and it's not deep or intellegent. But it defintely entertains, and it gets you involved. The show is tailor made to invoke emotions, and trust me, you will feel something, often many
things, at the end of each episode.
And if the periods of wangst and drama are too much, don't sweat it. There's always another song to look foward to.