Mortgage deductions are federal/national. People will pay sales taxes regardless which area they live, and regardless whether they own, rent, or squat. Not even remotely associated.
If a home buyer buys according to property tax rates, that is a local decision based on local tax rates, and has nothing to do with the national/federal aspect of the mortgage deduction directly.
And yes, as I have said... twice... there are some parallel benefits. Community stability is a nice one. I'm a big believer in that one. Still doesn't lessen the fact that you're getting a freebie in the form of a handout, parallel motivations notwithstanding.
Since you're deftly avoiding the specific question, I'll presume that you have indeed taken said home mortgage deduction at some point in your life. In fact, and I'm projecting here I know, I'd bet you bought your home primarily because it was a good financial move, and that you didn't *need* the deduction, but took it anyway because that was a good financial move as well... which makes it even more of a handout. But... that would be an inconvenient thing to admit.