I would challenge the phrase “my wife is unlikely to let me…” Do you have to ask for permission? If you have full responsibility for your household, then you must have the authority. If you are not a bum, at most, you may share responsibility, in which case agreement over permission may be a more appropriate model. Regardless, my suggestion is you help her understand what you see with examples (houses getting cheaper in sats, retirement happening sooner, cost opportunity of thinking long term, etc). Remember you once were blind too. Look back, what background did you have that lead you to understanding the key elements? Maybe she’s missing some basic concepts you assume she knows. I will say, life is even better once your wife finally gets it. It also helps if she’s ride or die type, because she starts by jumping in it with you just because she trusts you. Then your job is to help her see there was never any risk.