I only see two options to protect your assets from your spouse who wishes to use them up. Divorce and Outliving him. If you divorce him and your property is not marital property it should be kept in your division of assets (See an Attorney licensed in WA and specializing in Family Law about that). Also, if you keep your property separate, and never allow him any title or control over them, and OUTLIVE him, then he can't use it or take it without your legal permission (like titling it in his name or jointly with you). This is more a relationship question than a legal one. I wish you the best.
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