You should see the damage that rabbits do. I do some "rabbit control" for the farmer who lives next door. On some fields last year I'd say a couple of acres of crop was ruined per field and I have 300+ acres to look after. At the end of the day, it all translates to higher food prices even for veggies!
Anyway, rabbit is tasty and 70% of the ones I erm… "control" are for the pot. I eat some, my mate gives some away to old age pensioners, we sell some to a game dealer and the rest (30%) are left for M. Reynard whose presence always gives me a lift or sometimes we give the smaller ones to a chap with ferrets.
Grey squirrels are just a different form of pest, they may look cuddly and cute but they aren't, especially when they get in your loft and like all pests, they don't go away if you trap and release them elsewhere, they'll either come back or give someone else a problem – not really a solution.