I too, was originally going to plug in at home when I bought my Tesla Model 3 Performance with Performance Upgrade Package. But I was gifted unlimited Supercharging by Tesla for being an early adopter. So I decided to not put in a NEMA 14-50 for the time being. I currently Supercharge my car exclusively since day 1.
I either work the shopping into the Supercharging time or carry my work with me to occupy the time spent at the Supercharger. No longer would I ever sit idle and kill time surfing the net just to charge my car. Gotta stay productive. Most people value their time because they have many other obligations to take care of, which I understand. It's very limited to a small group of people who's willing to Supercharge exclusively for whatever reason. I will keep on doing so to get my money's worth and also as long as I own my car. If it's anything like my previous car ownership, it'll be over 110k miles for over 12 years. That'll make the unlimited Supercharging worth it to me and a big savings for me. I like the fact that I can hit 80-90% SOC in about 40-50 minutes. Vast majority of the time, I'm making an effort to get back to my car from shopping to not get hit with the idle fee.
So far, I'm already at 8k miles, and hit 270 miles at 90% (normal is 279 miles) consistently for the past several months. I'm not sure if it's a calculation error as I have in the past been charging up to 80% SOC to prolong the battery life, but with more unexpected trips during the weekends, it was worth the extra 10% SOC bump to 90% SOC. There have been reports of others who hardly see any battery degradation from Supercharging more than charging at home. Some of them can be found on Reddit and here in past threads with similar subject post. Technically, Supercharging could degrade the battery faster. But we don't have extensive data on such degradation yet since the Model 3 hasn't been out for many years to make a conclusive analysis.
I'd say just drive, enjoy the car, and charge however convenient it is for you.
Elon has stated that the battery for the Model 3 is rated for 1500 cycles, which translates to about 300k-500k miles before it should be replaced. By then, I think I would already be on the next car.