Personally if I'm talking to anything that has any degree of intelligence or sentience I use kind language. Not only does every living thing deserve it, but it also is just nice for me in the moment too. It's like a feedback loop of kindness, what goes around comes around, and I like feeling like a good person and seeing the reactions to that kindness.

Besides, my personal belief is everything has value and consciousness and we are all a part of the same consciousness, so in a way I also see it as being nice to myself in the end.