It is hard to find a right or wrong on this one, each must follow his own path.
You're right, it's an individual choice and I respect that.
Do I think it's relatively safe? Sure. I've never heard of someone being shot while blowing down an empty barrel. Would I suggest that someone do it or show it to my children? Nope.
I think with me, it's more the principal of the act rather than a safety issue. You either point unloaded guns at people or you don't.
P.S.
While you have to put your hands in front of the barrel when loading, you don't have to stick it in your mouth.