what if i end up alone

can anyone answer ?

my circumstances are this; i have lived alone 18 years in a little flat, i suffer mental problems and have had a hard life, i have no relationships or friendships anymore apart from my elderly parents, my immediate family.. but once my parents are passed on, what will happen to me? will i end up completely alone and deserted?

i don't think i could bear that fate, what will i do? that's what i want to know.