You clearly dont understand them, and never installled or used them.
What a silly thing to say, just because someone has a different opinion to you. I choose not to use them on the bike as once a tyre is punctured I feel it's integrity is compromised and I'd rather not add any risk to my motorcycling. I've used them on cars in the past but not on anything that would be considered a serious performance car.
I can understand there use to limp home on a bike if you have absolutely no other option, but as a routine measure, when a replacement is available, its not something I'd do.