> So sure, a mortgage in SF is $6k/mo. But rent might be $6k/mo as well -- and you don't earn any equity or tax write-offs while renting.
When you rent, your money is gone. When you buy, you normally get most or all of it back later. There's barely any economic comparison between renting and ownership. The tax write offs is the one of the least of your concerns.
People go completely and absolutely nuts when they end up "underwater" with mortgages, which means the sale price of the house at some point becomes less than what you bought it for, or worse, less than the remainder of what you owe. It's an utter and total disaster if you can only get back 80% of what you paid. And yet nobody blinks an eye about sending 100% of their money down the rental drain.
With ownership, you add to the value/legacy that you can pass to your family when you die. As a renter, you add nothing.
When renting, people often get priced out of their apartments, or evicted for circumstances beyond their control. With ownership, the sale price is once, and generally only rare major disasters can push you out. The risks to renting are greater than the risks for home ownership.
These things are why it's so incredibly important that home ownership is affordable across the country. If it goes out of reach, we will have a huge economic problem with large consequences.