Why does the 1st comment not reflect Buddhism?
Consider, "Shark attacks cause of loss of limb. It's quite obvious the significant number of people without limbs is probably largely due to shark attacks."
That's some theory but I'm pretty sure that it's diabetes (or, in a few areas, land mines) that's the more common reason for loss of limb.
I guess that's what the OP meant, by "over-generalisation".
I presume there are other reasons for antidepressants;
they say common causes of depression include:
For some people, an upsetting or stressful life event, such as bereavement, divorce, illness, redundancy and job or money worries, can be the cause.
... also ...
- Stressful events
- Family history
- Giving birth
- Alcohol and drugs
If it were me rather than you diagnosing a cause (not that I should, especially), I'd suggest e.g. perhaps a lack of kindness or generosity, possibly a lack of physical exercise, maybe system social oppression (sexism) -- as well as society's ignoring, failing to teach, the causes of happiness and unhappiness.
Possibly you've seen some examples (of anti-depressant use) in your personal life, and attribute that (unhappiness) to broken relationships. I don't think it's kind to generalise to the population at large -- people might experience "broken relationships" even though they were never promiscuous, or become depressed for other reasons. You might to be tempted to say, "they must have done something wrong", but I'd fear to engage in "victim blaming" and "adding insult to injury" and general misogyny.
Also it might useful as a cautionary tale ("don't be promiscuous, kids, or you'll become depressed!") -- but I don't see it as an especially "Buddhist" diagnosis -- because something I admire of Buddhist doctrine is that it's prescriptive and actionable. So it isn't ...
- You were bad in the past so now you're in hell, your fault
... and instead it's ...
- The present and future aren't predetermined by the past, your action in the present is effective