It depends on the situation. I've worked in tire shops before and I've installed many patches, plugs, and patch-plugs (the mushroom sort). Most of them didn't come back for rework. I've even seen tires on low speed construction equipment get sewn up and last decently long when new tires weren't available. However, my own driving is such that I wear tires out fast, and I tend to view them as a consumable item. A flat on anything that isn't my bicycle just gets replaced.

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Whoever said there's nothing more expensive than a cheap Mercedes never had a cheap Jaguar.

83 300D Turbo with manual conversion, early W126 vented front rotors and H4 headlights 401,xxx miles
08 Suzuki GSX-R600 M4 Slip-on 26,xxx miles
88 Jaguar XJS V12 94,xxx miles. Work in progress.
99 Mazda Miata 183,xxx miles.