Kindness can be taken advantage of. You also never know if kindness is genuine or a ploy. Respect is very clear by objective actions. Liking or disliking is subjective but respect is objective.
I respect Islam. There I said it. I think Muslims are the coolest Abrahamic religion by far. I mean it is all made up fantasy but the culture behind it is what's cool. If I had to pick a religion other than Hellenism I would pick Islam because I deeply respect Islam.