My entire house is filled with mostly inherited stuff. I'm frugal and grew up between both lower and old money upper class but i have to say if you can make it look coherent it's fine and has saved me tons. Where it isn't it's a mix and match of thrifted high quality and low quality stuff.

My electric standing desk and chair being one of those modern things that costed a couple of thousands but i got secondhand for a combined 200. The desk is built like a tank. For the chair i replaced the cracking armrest covers with leather.

I also have some hardwood old tables and cabinets that are a couple generations old and as functional now as they were back then.