If you have enough other investments to be comfortable, don’t especially want to change retirement timeline etc. and your wife is fine with it, I’d keep it as a potential hedge against a depression that crashes the value of index funds. I would not split it between whichever small crypto projects can sell you a convincing narrative that they have ‘moon potential’ when your financial circumstances mean you don’t really need that anyway and that is specifically what would open you up to the ‘scamminess’ of crypto.