I have actually never charged to 100%
Usually 70-80% sometimes 90% extremely rarely to 95%
I've never charged to 100% either. Basically, I've just never needed to.
For daily commutes, I charge to 60%. I get home with 40%.
I usually charge to 80% at home to start a road trip. That stretches our first Supercharger stop just long enough to finish lunch before heading out again. Sometimes I'll charge to 90% at a Supercharger to get to a destination with about 55% left.