So after the zombie apocalypse hits and the limbs go flying, providing you still had a choice, would you choose to survive on your own or seek out others to band with?
I suppose on your own you have that whole independence thing, only having to take care of yourself and immediate family who you can (hopefully) trust to watch your brain splattered back and have your best interests at heart. Plus, unless you breed as rabbits, your numbers should be relatively low thus requiring less supplies, reduced baggage and ideally fewer things to worry about as you fend off hoards of the dead.
Then again there is some safety in numbers, more hands on deck could speed tasks up and should Bub and co. break in to your fortified location other survivors could (unintentionally) act as cannon fodder while you make your escape. Alas trust will have to be earned and risks often taken but at least the weight of survival won’t be resting solely on your shoulders dragging you to hell.
As much as my inner-overlord would want to organise survivors into a communities I don’t think I would want the risk of teaming up with someone with plans as big as mine! As my mother once said, I don’t play nice with other children so I’d be better off on my own at first, perhaps drifting between groups as and when needed.