This is why depression is so prevalent in developed countries, while poorer countries that objectively would seem to have a lot more reasons to feel depressed (like in the hand-chopping scenario @kyriacos described) it is almost unheard of.
You admit then that depression is a social construct and has nothing to do with the fact of being a homo-sapien.
oh and by the way
Wrote a piece in the past about this. Depression is a disease of civilisation, not a human illness.