Until bitcoin is the standard, I'm happy just basing my rent payment on a USD value. Let's say rent is $1000/month right now. That is roughly 4 million sats. I would MUCH rather send the equivalent of $1000 in rent rather than a fixed sat amount because if the USD value of BTC doubled, then I would much rather send 2 million sats for rent rather than 4 million.

It will get interesting in the future because currently we are "okay" with or rather used to rent going up a bit each each. In a bitcoin world, you'd almost have to envision a world where your rent goes down in sats each year as the purchasing power of it keeps going up.