"Gun owners will often tell you that guns help them to feel safe, secure and protected. They will also tell you that guns empower them and make them feel independent and strong. They also talk about how just holding and handling guns is pleasurable," Hill said. "If guns do make people feel safe, secure and protected, if they are empowering, if they are contributing to feelings of pleasure, then they should promote happiness, but we don't find any evidence of that. That calls into question whether or not these are real feelings that gun owners have, or are they just part of the culture of owning a gun?"