i don't like the spray paint analogy.
do you buy your nice clothes from walmart? buy knives or tools made in china? buy shoes from pay-less? do you drive a kia?
i doubt it. i buy quality clothes, tools, knifes, shoes, everything else because if i put money into ANYTHING i want it to last, i treat it as an investment. like cali-G said, proper maintenance is going to help maintain your investment's value.
now if you buy a nice stone to sharpen a gas station knife, yeah, you're a fucking moron.