this is a common occurrence around my house, and area. If a venomous snake is any where near the house, I'll kill it. it's too much of a risk for my cats, and I don't want it crawling into my house (looking for a cooler area) and hurting anyone. I always decapitate venomous snakes... bear in mind most of the worlds deadliest snakes are in Australia... and bear in mind there is a child care center next to my house.
the snakes I'm most frequent to are whip snakes, brown snakes, king brown snakes, red-bellied black snakes, ordinary tree snakes (no harm to anything, except for the birds, I do not kill these) and carpetsnakes/pythons (no harm to anything, except my cats, but the cats can deal with them).
I don't go out looking to kill them...