Have you ever held a Bat’leth? Because it makes you feel powerful. Klingons are interested in feeling powerful and striking fear in their enemies, and for that the Bat’leth is pretty freaking great.

I mean, we’re human, so I get the whole Indiana Jones “Ima just shoot the guy” thing. But we’re talking about Klingons. Even if the weapon is objectively bad, there is honor in killing an enemy the hard way.