Me too except my first phone is the only one where I had to replace the battery. My 5 year old phone still lasts the whole day without going through any of this

Me too except my first phone is the only one where I had to replace the battery. My 5 year old phone still lasts the whole day without going through any of this rigmarole. It's mostly superstition and the parts that aren't are such a wash that they aren't worth worrying about. Just look at these people trying to reach an agreement on whether you should stop charging at 80% or not. Your gadgets should work for you not the other way around.