I agree with your thoughts not to go to extremes. Some of us need a reminder to follow the one-in-one out rule and to make sure not to hang on things that really aren't needed.

I'm familiar with Kondo but haven't read her book. I'm going through everything in the house this year really slowly, one drawer or shelf or small space per day. I've never done it this way, and so far it is really working for me. I wish I'd figured this out before. Usually I go through things seasonally, but I tend to do too much at once. It sounds like you're naturally good at staying on top of things. I was naturally clutter free on my own, but once I got married I had to learn how to keep a whole home in order. We were given so much hand me down furniture and "stuff", I was overwhelmed. I finally realized I needed to give most of it back.

I keep surfaces clear; so it appears very clean/organized, but inside the drawers and cabinets are too many craft supplies, art supplies, toys, books, games...and on it goes.

It's mainly things the children are growing in or out of; so it's hard to let these things go, but I want them to know how to balance their treasures. They're happier when it's less overwhelming, and they don't have to squeeze everything in. I'm happier with less clutter. I don't like a bare look, but too much ends up feeling like a never ending to-do list. There are some things we had/have more than we could ever use, and in that case it's win-win to pass extras along. They can be enjoyed now, and we have room to enjoy what we have.