The rental value accrues tax free. As a counterfactual, one would earn more than the rental value, pay taxes on it, and then pay rent.You'll have to clarify what you mean by "5% guaranteed annual tax-free dividend".
Oh I agree, this is what I was getting at with my comments on the downsides. It's big, it's leveraged, it's illiquid. It's also pays ridiculously reliable dividends and has absurd tax benefits. These are the tradeoffs.Putting a huge amount of money into a single leveraged asset is always going to be questionable. There is an expensive condo building on the corner of my block. The city just put up an apartment building on one side and is now building a hotel on the other side, blocking all of their lake views. I'm sure those owners lost a ton of property value.
FWIW, I'm not a home owner and am glad I resisted peer pressure to buy in the mid 2000s. But I also have moved a lot. Even so, the limits on tax advantaged accounts only take you so far.
If I had 300k sitting around and knew I'd be staying in place, I'd rather buy a house than a taxable fund. I'd also rather borrow to buy a house than borrow to buy on the stock market.
I guess my main point is that mortgages and housing are often conflated as the same transaction, for obvious practical reasons. But what you're really getting is a reliable, tax efficient investment, which is so good that you're willing to take on more debt to get there(and even that is subsidized!)
I agree with you that it's not for everyone, but especially once tax efficient investments are in place and one is looking to settle down, there really isn't any other investment one can make that has the same mix of yield, tax-advantages, and low variance.