Silicon Valley brain is real, folks
You're just patronizing everyone who isn't in Silicon Valley with a statement like this.
First, how many Americans only own stock as part of their 401(k) or IRA and can't liquidate it without affecting their retirement?
Second, how many Americans own stock portfolios with sufficient value that they could liquidate them and purchase a house for cash, as the initial response implied? I guarantee you it's less than 60%.
I'm talking about down payments, paid for by stock sale, 401k, or IRA loans.
Maybe I'm crazy and you're right, but I think most people use these vehicles to save for and fund their house purchase, not a regular savings account.
You have to pay back with interest, but the interest goes to you.