One of the potential problems we now have is comparing the conditions someone has to another, as if the people themselves are one to one.
For instance, One person can run up a flight of stairs, so why can't another person in a wheelchair? People go, that is obvious, they are in a wheelchair, their body can't do it - but the brain is also a physical organ and part of the body - what if the brain can't do it?
But whether rich or poor, the one who is depressed and thinks about finding peace, can find it in another place than death.
This is an assumption, isn't it? Maybe it is true, but maybe it is not. But regardless, for the person in the situation that can't see an alternative, it is irrelevant what other options there might be.
For example, you also mentioned euthanasia as an option, but have you ever looked at the cost of it? It is above most people's capabilities.