If the rodents you're feeding your snakes are disease ridden and parasitic, so are your snakes. I hope you've found a better supplier than that. Rack-raised rodents ought to be about the cleanest animals you could get. You don't want to know how they raise chickens. . .
I didn't read the entire epic thread, lol, so I'm sure someone already addressed it. But, sure, humans CAN eat mice. Do you WANT to eat mice? Prolly not. Awfully bony. Same reason we don't eat sparrows or other tiny critters---too much work for not enough meat. But my uncles have stories of roasting rats (filthy tropical rats, not nice sanitary feeder rats) over a fire in Vietnam, and they're still alive. So knock yerself out. People will look at you a little weird though, haha.