AARP magazine has an article about self storage units. I guess as a
society we like out junk and are willing to pay to keep it. The US has
90% of the storage places in the world.

One in 10 household rent space. Total of 1.9 billion sq. ft.

Average rental is 15.8 months

Six of 10 boomers visit the storage unit one a month

In a recent year. 1550,000 units were auctioned off for non payment and
abandoned.

As a society I guess we put a lot of effort into keeping crap. I would
never keep that much and when we moved about 2 1/2 years ago made many
grips to Salvation Army.
even after moving, I still got rid of stuff.