Too polite/nice on online dating???

Crystal
Is it worth being polite to every guy that sends you a message on online dating? I hate boring conversation too, so I keep it lively, then....they want to meet. And I have no attraction to them at all. Then I feel like I have to tell them, "no I'm not interested." Which I should, but instead I don't answer and pretty much ghost them. Or would it be more worthwhile--and fair even--to only answer to the ones that you like? I'm conflicted because by being polite, I end up being rude to some of the guys.