I have my mian system in my main living area, because my goal was to have a system I can enjoy as much as possible in as many use cases as possible. And enjoy it when company is around. That has tradeoffs versus a dedicated room of course, mainly around acoustics and WAF.
However, I'd much rather trade those for getting to enjoy it more of the time. I probably listen on average at least 10-12 hours a week purely for music. Combined use with the AV setup, probably double that.