Statistically, yes. Individually, guns are not bullet magnets, but they make their owners take more risks and try less hard to escape dangerous situations, which is a grave mistake.

Assuming concealed carry and the proper mindset of only using a gun as an absolute last resort (big assumption), a weapon is just a tool, and having it in the toolbox would be more useful than not.

'tis the heart of the debate. Individually, guns are tools. Yet societally, the damage caused by the mentally unsound gun owners vastly outweigh the individual benefits, which is why all developed countries besides the US heavily restrict their use (though guns are not as rare here than Americans might believe, especially in rural areas where they are used as tools to protect against or hunt wildlife, or in some countries with conscription where reservists might own a gun, but aren't normally allowed to carry it in public).