In reality I have a two and a half car garage that is mostly full of storage and tool as we slowly comb through everything to donate or sell (except most of the tools). Our spare room is 8/10s full of storage also. We moved from a 3k sq ft house down to a 1400 sq ft house. We are making progress but it's slow going.
The Wife and I are going through the same issue.
Going from a 5k sq foot house and a four car garage to something more manageable.
The Barndominium is our answer.
Lots of garage/storage and the house itself can be drastically reduced.