>You get mortgage interest deduction
People say this but do they know what it means? It's not like the "woooo, free money!" people make it out to be. You are spending a lot of money and saving a little bit of money. It's only a very significant decrease in taxes if you pay a real lot in interest and have high property and income tax.
In my experience buying a house saved me only about a whopping $500 in taxes the first year. And you better fucking believe that $500 went right back into the house in the form of maintenance and upkeep.
Furthermore,
You don't get the mortgage interest deduction if you don't itemize and take the standard deduction instead. Due to new tax laws the standard deduction after 2017 is so high it will be taken by 97% (IIRC) of Americans. So mortgage interest deduction is totally irrelevant from 2018 on.
One of my biggest concerns with putting the vast majority of my wealth in my house is a lack of asset diversion and if it causes you to negligent the tax advantages of contributing to retirement account. ESPECIALLY when your in your 20s, that's when compound interest work most of it's magic.