Call me what you will, but friends and relatives make not a shred of difference to me. It's undeniable that it'll destroy a few people's lives. At most, my parents, only slightly less so my 15yo sister. Less still my 22yo younger brother. Extended relatives, a couple of mates, volunteering colleagues, etc.
But as in any other situation in life, you or I are not responsible for the emotions of others. The Human Survival InstinctTM is as we all know, a viscous, insidious bitch, at best. And it will use anything to keep you alive against all reason. Both on the principle of not being responsible for others' emotions/lives, and in fighting the Survival InstinctTM, I avoid giving any credence to the notion, that the thoretical suffering of others should require me to continue quietly suffering for their own sake.
There's no moral high ground with suicide - if I'm not being selfish by continuing existence, everyone around me is selfish to the same extent, for wanting me to suffer for their sake. And vice-versa.
Returning to my well-meaning-yet-abusive parents for a moment, I'd like to add: "Play stupid games of repeatedly bringing children into a horrific world, then win stupid prizes like one of those children opting-out of existence"