All these things OP have mentioned, avoiding them is never going to make you rich, so your list is a joke. Every rich man I know and even the ones we know today as the world's richest men, none of them got to the position they are today by avoiding to pay their tax or avoiding to get marriage, etc. But they are still rich. It's hard work and grace that will get you to the top and not all these things you have written here.

And as for people getting a divorce and losing half of their wealth, well that's their business. Marriage isn't something you jump into, the process should be step by step unless you will end up getting married to the wrong person and when you do, at the end you're still going to divorce.