It would be hard to compare the lifespan of a captive snake with a "wild feeding schedule" to that of a wild snake because many snakes in the wild do not die of natural causes (illness, habitat destrcution, predation, etc).

Its also important to note, what wild snake would encounter a perfect temperature gradient in their habitat 24/7, among other conditions that we keep the same all the time? Basically, we can't make comparisions between wild and captive snakes. Theres just so many factors that are different.

I think that if we aren't going to provide them with a direct simulation of their environment in the wild (weather, season, temperature changes, etc), then it would not be appropriate to attempt to simulate their wild cousins' feeding habits as well. If we provide consistant temperature, conditions, and other environmental factors; then regular, consistant feeding should be practiced as well.