> Suicide is never a rational response, and can't be taken into account on the spectrum of human needs, since it's an abnegation of all human need. It doesn't need to be considered within the spectrum of rational economic responses

I mean it totally can be:

1. Assume materialism/naturalism.

2. Experience pain or some other unpleasantness and dislike it.

3. Suicide solves the pain problem completely, and creates no further problems from the perspective of the person commuting suicide.