Which inanimate objects do you greet? There have always been trees in my life that I've been particularly courteous to. Mt. Rainier will often get a respectful nod from me. If the moon is especially brilliant I'll say hello, and Orion will almost always get a genial "How's it hanging?" out of me. It just seems polite.
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Particular trees but not all trees. Action figures and such when I put them up or put them away.
I'll talk to cars if I'm worried about them or trying to make friends with a new one. I'll talk to computers if they're lagging or I'm waking them up.
I will not turn my back on statues or taxidermy, but I rarely have anything to say to them. (Blink was very difficult for me.)