, and could make me personally vulnerable by intertwining my finances with the LLC's. 

Do you agree with the rest of the assessment, that otherwise your are vulnerable?

Small cities can be vulnerable too, and it is often difficult to assess the health of a dominant employer.

And in this part of the country you are vulnerable to frozen pipes by allowing too much air to circulated underneath. 

Much also has to do with the LLC capitalization, as it may stand alone based on its own holdings and the fact that most LLC's  are under capitalized, thereby leaving them vulnerable to challenges of really being a stand alone business other than a ploy of an individual operator.

Of course there's always the venerable (vulnerable?)

They may see us as people that prey on vulnerable victims of poor decision-making or badly thought out management of their personal affairs.

Commercial property owners seem to be In a vulnerable position.

Explain that since a month to month lease leaves you vulnerable to a winter vacancy you will begin keeping your eyes open for a 1 year lease tenant.

If you haven't done a few transactions in the last few years, you could put yourself in a vulnerable position.