Good point, but I’ve never had a problem with moisture. None of my tools have ever has a rust problem. It’s a basement garage with thick block and brick exterior walls and living space behind and above.I would be concerned with moisture in a garage unless you have it insulated. At very least i would keep my powders and primers inside maybe. Also watch for rust on some components that are susceptible to corrosion in an uncontrolled environment .
Just a thought .
Good luck and load up a storm !! Lol.