We have to replace furniture generally every 5 years at least because of the cats. And repaint every 7 years.
However because we have 2 homes and life has been crazy this past year plus we are quite overdo re our Brooklyn home renovations. We need to paint and replace some of our couches at the very least. Most of our furniture at our Brooklyn home is antique so we do not replace those but we do refinish it as necessary. The cats really scratch the heck out of everything.
Not sure we are going to have the time or energy this year to do anything here at our Brooklyn home but we shall see. We won't do it at the sacrifice of going to our beach house as soon as the weather turns nice for cycling so we might have to postpone til next winter. And that is OK. I have let go of being a perfectionist or else I wouldn't have survived these past 5 years.
We did repaint and replaced all our couches at the beach house and re did the entire color scheme less than 2 years ago. It really freshens things up. Also gut renovated our kitchen. Went from blah to yeah.

IMO.
Before:
Kitchen:
After:
Hard to show the kitchen in photos. Here it is from south, east and north. We put 2 fridges in one on each side.
Living Room before:
Living Room After:
Couches replaced but original area rugs
Area rugs replaced shortly after we got our new couches