I suppose that would depend on how easy it is to change ones perspective, which is something I've made no claim about. If you are depressed, for example, perspective change is notoriously difficult--and in my (admittedly limited, anecdotal) experience, everyone I have known to view life as a curse has been suffering some level of depression.

What perspective change? Your brains splattered on the wall? While I am also grateful to be alive, I don't think it's that hard to imagine other people being in situations where they feel deeply unhappy about being born, and that that feeling really can't be dispelled with a simple "perspective change", unless you mean suicide.