And #3 - redundancy so a family member doesn’t end up homeless. I have family that does fairly well for itself. When their first kid turned 18, they bought a rental house in case she needed it someday. When their second kid turned 18, they bought a rental house in case he needed it someday.
So they own two buildings “for the purpose of renting it out”. Building number 2 is now perma-“rented” to kid number 2 because he needed it.
Also, bullet point #1. The NDQ typical long-term return is approximately 11%. Due to recent bubble bursts, it’s down to 10.4%. Importantly, that’s almost exactly 1.3mil in 10 years from 500k. Everything I’ve ever read and learned from investing or investors repeats that rental real-estate is a stable investment, not an aggressive one.