I thought that too and purchased a second adapter when Tesla was still asking $90. It has sat in my car untouched for 4 years. But yeah, if you use it every day, and I do have the satisfaction that I have it there, means I never worry about having a charging option.
Heck, I still have my UMC kit in the truck that I have only used twice, the J-1772 adapter, the second adapter I purchased, the CHAdeMO adapter that has done the heavy lifting on keeping my car charged for free over the years, and now the CCS adapter I used for the first time last night at the local Electrify America. And I use an original Model S 40 amp charger to charge at home and the Tesla 80 amp Wall Connector to charge at our cabin.
I think I officially have all the ways Tesla makes to charge your car. I now have a Swiss Army Car.