.357 is the minimum in my mind and I love my 45 but people critters are easier to stop than large hairy critters with 6" claws and large canines. I have moved from .357 to 44 magnum or 41 magnum depending on what I feel like carrying that day. Both give me a comfort factor that the 45 would not.
Good intentions will always be pleaded for any assumption of power. The Constitution was made to guard the people against the dangers of good intentions. There are men in all ages who mean to govern will, but they mean to govern. They promise to be good masters, but they mean to be masters.