I'm not aware of the specifics OP talk about (I'm not from the US) but any mature adult should of course care about the unfair loss of wealth. If you look at US marriage/divorce statistics, it'd not be paranoid to think that it could also happen to you. In fact, I bet most of the people who got to lose "material objects" unfairly never thought they'd be in that situation - which then makes them get to experience the miserable way of life you mentioned, at least for a while.

So yeah, I'd suggest to be mature and consider that things can go wrong, which shouldn't affect the depthness of the connection while things work (hopefully forever).