They're pretty handy, I'll admit.
Like when I see my husband (a fine carpenter! does wonderful finish work) aggravated and cursing a part that won't go on right... and I come in, take a look and flip it to how it is actually supposed to go and it does right away.
He's pretty physically gifted and I'm so clumsy I'm barely allowed to chop any veg while cooking... so, when I've got something I can do that he struggles with, it makes me feel pretty good.
I think at least my youngest son has got it, too. He's not much of a talker, but, he could use a hex wrench before he could even walk (don't worry, I stopped him before he disassembled his crib after daddy left my set of hex keys nearby).