this was my road to FI. DH could understand paying off the mortgage, but wouldn't have bought in to saving 50%.....once he was used to living on 50%, I just quietly diverted the cash flow to savings.....
Tee-hee! I'd like to do something similar, but my wife is keenly aware of how much more disposable $$ we'll have once the mortgage is gone -- and she has lots of ideas on how to spend it!
It's not ideal from my POV because I'd really like more savings and
less spending. On the other hand, my wife's happiness is more important to me than having a rock-star savings rate. It's a foregone conclusion that some of the $$ will go to things my wife values: remodeling around the house, longer family vacations, etc. Fortunately we're already close to FI, so I can compromise on my desire for much higher savings rate without much impact on FI/RE.