I lived more than 50 years without correcting any room me too ... 😊
I’ve been in audio for 60 years, and haven’t corrected a room yet.
But unlike you i discovered and learned by experiments why and how i was wrong .😁
Most of the times because most room need it unbeknownst to the lazy owner or unbeknownst to those who anyway are unable to do it because it is a living room and they are married,
It is most of the times the result of acoustics basic science ignorance coupled often to gear price fetichism upgrading obsession ... 😁
Sorry... I learned it the hard way ... 😊