While the laws may be awful in California and you should always seek to make reasonable and prudent financial decisions... if you have a spouse in mind and this is still weighing on you then you're probably not ready to get married.

Also if you have a ton of money go talk to a financial adviser or do some more research, there's many ways to protect your finances from a number of scenarios that don't involve skirting the law. You'd likely have to disclose offshore accounts in the scenario you're imagining so you'd either have to lie -- which is illegal -- or it would all be wasted effort.