Heh, I'm a depression surivor myself. I think what made me realize that pain is irrelevant is the basic theory behind life.
A man is on a beautiful boating trip. He is sitting on the deck of a his huge yaht with his gorgeous wife and kids when he gets a sliver while rubbing his hand against the dock rail. Instead of just ignoring it, he makes it the center of his concern. He doesn't enjoy the trip because he can't seem to get it out, and it occupies his time thinking about the pain.
Another man has a rough life. He was raised in poverty and lives from paycheck to paycheck currently. He is surrounded by violence and insecurity, but has a family that he loves very much. He wants the best for his kids, and their well-being makes him forget about everything else. He knows he could survive without them if something were to happen, but they make him very content and they're his focus in life.
Question: Who really lives the better life?
Now, while these are both extremes, there is a moral. The moral is this: life is what you make of it. Pain is not the measure of a person's worth or their mental health, the intensity of how much they dwell in their pain is. You just need to read deeper into what I'm saying next time instead of telling me "you don't know depression, you dont KNOW what it's like".