The future of the world...

[Paul]

Kibbutz Welsh style eh?

I'm with BigPaul here.
I'd rather live alone than trust strangers.

As for long term survival?
They'll be plenty of individuals to pick from without joining an established group with all their little rules and regulations.

I'm betting that one of the first things such groups would demand is that you surrender your weapons.
Would anyone in their right mind give up their weapons and blindly trust a group of strangers?
Would you then surrender your hard won supplies for the common good?

Yes to both questions shows a person with dubious security awareness.
Still, if you've got it wrong you'll have the knowledge that your cadaver will make good fertilizer for spuds.