Do you use an external keyboard to mitigate long-term wear-and-tear on the laptop's keyboard?

I read someone saying that getting the keyboard replaced costs ~$500, and that while it's possible to replace the keyboard yourself it is a pain in the ass to do so (and you can possibly nick a wire or a ribbon and cause way more damage).

I've been thinking about getting a half keyboard to use while gaming to prevent wear-and-tear on the laptop's keyboard. I know I get a bit heavy handed with my key presses in tense action/multiplayer games. But maybe I'm being overly cautious about a non-problem. Do you have the same worries or do you just use the laptop the way it's intended to be played on?