I am almost 50 years old, have never had a relationship, no job last more than 7 years, no hope, no prospects, my 'friends' think I am a joke when we play games, I don't make new friends easy, the only person who respected me died of brain cancer, my mother is a narcissistic sociopath (to be fair, caused by medical issues), and yet, somehow, people think I have nothing to be depressed about

This is after I have explained, AGAIN, that depression is not sadness

Sadness is a normal reaction to an upsetting event. It is healthy.

Depression is not the opposite of happiness, depression is the opposite of vitality