I can’t relate to losing a support system like that but I can relate to not having one despite wanting to… because I always wanted a supportive group of people to belong to but never found one. What happens is that I’m always there for anyone who needs me, and no one ever is for me, when I need something.
I feel like a lot of neurotypical relationships (especially larger groups) have transactions which are either impossible or very taxing for us. In other words, we are never able to receive any support from these so called “support systems”, we just give.
Personally, I’m trying to be at peace with the fact that I will never belong to a large, consistent group of people because while I have many things to add to such a group no matter what brand they gathered under, no group has what I need.