Statistics are funny.
I used my spare tire once in 10 years of owning my previous car (and it was in the last couple of months of owning it before I got the Tesla).
I missed having a spare within the first week of owning the Tesla (slow leak requiring a tow, overnight storage, and a repair the next day due to a lack of extra spares in the SF region)...
Two incidents within 3 or 4 months would lead me to believe that spares are essential, but compare that to years of never needing one.
Other statistical anomalies for me - 21 years of owning German cars and never once stranded, then stranded in my first week of owning a Japanese car.
It's not me, it's the cars. OK, maybe it's me...