You are at milepost 60 on I90 in Montana, its 10:30 at night, and its raining, and your tubed tire goes flat.
Towing services say "call us in the morning" and even then they are many miles away.
So then, you either carry tires irons, a bunch of tools, and push your bike on its side to remove and repair the tire ... (not likely)
or you leave your bike in the rain on the side of the road until the next day, hitch hike the next day to some town, and wait for the next day
or, you try a can of Slime.
That's the question I am asking.