It amazes me that a musical dramady was the one show to address bullying, mental illness, love, heartbreak, obsession, alcoholism, transgender rights, suicide, and so much more. It wasn't just occasionally covered. It was all interwoven through every script and into character. We rooted for couples and their ability to get through adversity. Even through Montieth's death, the writer's never said one way or another why it happened, but instead they addressed it with a scolding quote from Kurt saying "Everyone wants to talk about how he died, but who cares? It's how he lived". That is just one important lesson.
I am not saying that this is the best show on TV, but it was real. We don't have enough real emotion in the world. We don't have real happy endings, but it is nice to see something that takes a lemons and makes lemonade. Or takes ice and makes slushies.