Depression is caused by more than just external events. Yes, based on personal experience, but there are more factors to be considered and fixing one issue may not solve the problem.

"Rather, depression has many possible causes, including faulty mood regulation by the brain, genetic vulnerability, stressful life events, medications, and medical problems."[0](https://www.health.harvard.edu/mind-and-mood/what-causes-dep...)

In my experience there is significant coupling between external events and one's ability/willingness to maintain physiological health.

I am pretty sure part of my depression is rootet in pushing my seratonin levels in the past. So i also see it as physical issue.

I don't he or she meant it that way, the OP said "from personal experience". Your response was uncalled for...

One of the biggest problems with how our society deals with depression is "from personal experience".

You're overgeneralizing on how society deals with depression. Just because the OP said it does not mean you and I agree with him/her.

I disagree. You and I know that personal experience isn't good to generalize from. But in my personal experience, the vast majority of the time that people use the phrase, they do so to communicate that they know things to be a certain way, at least strongly enough to base other conclusions on.