I'm really sorry when I hear about this kind of situations, I really admire people who are able to move on and stand on their own even without the support of their families.
I think it would be devasting for me.
I've always had a lot of respect for their courage, really it takes a lot of strenght to be able to do that, a lot.
Maybe you don't realize because they don't tell you directly but a lot of people probably feels the same as me when they look at you.
I hope you will all find the support you need sooner or later, ...I seriously hope you'll meet someone you can relay on and will be ready to catch you when you fall.
PS : I know that it might happen to feel jealous of the people who still have their families, I think very it's understandable, ...but if you can ( it might not be easy ) try not to judge the ones who act like they give thier families for granted, because ... unfortunately many don't realize what they have until they loose it
it's not like they are bad or anything.
try make them realize what a great treasure they have instead if you can, because too many life their lives giving priority to the worng things, it's really sad.
Anyway to all of you that are in this situation...Let me send you a huge visrtual hug, I'm pretty sure your family members would want to see you smile and live happily so keep being storng.
I wish you a loooot of happiness