Pit bulls are not inherently dangerous. Like any other dog, they can become violent, aggressive, and mean through a lack of training, abuse, neglect, and irresponsible ownership and breeding as well as a lack of attention to health and temperament issues.
Most pit bulls are fun-loving companions, gentle and patient with all their family members (with the very likely exception of other pit bulls). As with all breeds, there are exceptions.
Pit bulls were bred to be courageous and game, to continue whatever they are doing in the face of adversity. These qualities make them stubborn, tenacious and fearless. As with any large dog, pit bulls should be supervised when with children.
Life with a pit bull is always an adventure. These are fun-loving dogs that are always up for a game. They must have a vigorous exercise period every day. Although they are tough dogs, they are not cold weather dogs and should be shielded from the elements.
Pit bulls should be obedience trained because it is a good bonding activity. Because they are very often not good with other dogs, they should be kept on a leash when around them.