I'm 64 and my goal in retirement will be to live as well as we do now: able to spend money on travel especially. Our current life is not simple but it isn't runaway rampant consumerism either. Our newest vehicle is 8 1/2 years old. Since my worst worry is outliving my money in retirement and my wife's business isn't making much money, I'm working a couple of extra years to be more confident about that. I do mostly enjoy my work (a big factor to me anyway) and at my stage of life the bosses cannot do much to harm or distress me... which is a good feeling.
I am very sympathetic with simplifying life in retirement and I'm sure we will do some of that: selling off junk we've accumulated over the years comes to mind. And trying to spend more time on projects around the house I've been putting off. But I also want to be able to do more of some things that cost money when I stop working. It's complicated isn't it?