You've clearly never been married and have no idea what you're talking about. Hiding secrets and saying it's impossible not to is the most destructive thing you could do to your marriage. On top of all, hiding assets from a spouse during a divorce amounts to contempt of court and carries a penalty and additional legal battles and expenses. Please don't recommend anyone to do it.
Sure but it's always good to keep a backup/bug out plan.
I would absolutely keep enough money set aside to at least get an apartment and furnish the necessities immediately. That's smart.
Then find a partner who is okay with having separate bank accounts that you can keep your own money in. It doesn't have to be a secret.
