Smoking grass has nothing to do with it. Swinging in your own home, with your kids in the house puts your kids at risk. Is this even in dispute?
Depends---there are a whole bunch of variables involved. One would think if a couple knew another couple well enough to have sex with them, they'd know them well enough to know whether or not they'd abduct and murder a child.But if a couple indiscriminately picks up a derelict off the street to bang, that's a different ball of wax. No?