Years ago I kept having this argument with the party fighter. I was playing a rogue. He had some sort of magical lens with a bonus to find traps. I was like, "let me use that so I can find traps better. You can't even find traps with a DC above 20, rules as written. That's a rogue class feature. With the lens I'd be getting like 27 if I take 10."
He was like "no. It's mine. I found it."
Like, my guy. We're all in danger if we don't find the traps. You don't see me holding onto armor I can't use.