Very few people HAVE to go digging if they don't want to. The reason we dig is because of the sport, thats why we started foxing in the first place. Some foxes have to be killed but many others don't, dependant on circumstances.
Lambing and bird areas/times, out with the hunt (mostly), they die. Dog gets a pasting or a real b*****d of a dig, ditto.
Moorland, arable, heathland, etc. no reason to kill them all, good sport and foxy is there for another day. JMHO.
Cheers, D.