I used to watch Glee b/c I though it was pretty funny and I did like some of the music. But it just started getting incredibly annoying and the characters were pissing me off. I just had to stop watching.
The character growth was minimal, if not nonexistent. It was almost as if the writers were like "oh crap, we're loosing the (insert character role)" and regressed the character back to that role instead of letting them be better.