Very, very true. Any tool addiction can be somewhat detrimental to finances if you're just collecting them but if you're using them to make a living, write them off on your taxes and I tell myself how useful they'll be for my son and daughter to be able to use to start a business or earn a living. He uses my tools now to earn money, I see THAT as a worthwhile investment more so than the tools themselves. My daughter is 2 and has a pocket whetstone that broke 2x and got superglue back together that she pulls out anytime im honing and she will rub it on the diamond plate lightly, put water on it and spend 30 minutes yelling at me to use her stone because she isn't big enough to touch knives obviously. Learning the important stuff."Can a self confessed Rock Hound ever have enough stones?"
Nope, there are more expensive/destructive addictions.