Singapore is surveyed as either the happiest or second-happiest country in Asia (IIRC), with at one point a >95% homeownership rate due to government policy (although I believe that's now closer to 90%, in part due to foreign immigration?). It seems self-evident that having a home is somewhere on the order of 1000000x more important than being able to buy lots of cheap junk that barely matters.
Also if you buy lots of cheap junk for your apartment and then have to move, you will not be happy.
A lot of that cheap junk is clothing and food, which now both make up a much lower percentage of total income than they did 100 years ago.
Finland is consistently ranked as the happiest country in the world and has a home ownership rate comparable to the US. Denmark ranks 3rd and has a slightly lower home ownership rate than the US. Oh, and Singapore ranks 36th[1], while the US is 23rd[2].
So you're probably wrong on all points here.
[1] https://data.worldhappiness.report/country/SGP
[2] https://data.worldhappiness.report/country/USA
I'm curious what people are quibbling with here? Romania has the world's highest rate of home ownership at 96% and only ranks as 34th in happiness. Or maybe Kazakhstan but I can't verify the data on that, and it's right beside Romania in happiness. Switzerland has the world's 4th lowest rate of home ownership and ranks 10th happiest. It seems like from a data perspective there is no empirical support for the idea that home ownership directly correlates to societal happiness.