So it isn't just me, then...
Whew!
I've been doing this for years. Decades, really, ever since the prequels (where it was shown several times). Every grocery store I go to, or any store with an automatic door, I do the little Jedi hand wave thing.
As recently as yesterday, in fact.
I don't even really think about it at this point, it's just automatic habit. And if I'm ever with someone, I get some variation on "really?!" or "hard to believe he's single, ladies...".
Once I did it and a woman coming out chuckled and said "these aren't the groceries you're looking for". Busted! Which made us both laugh. I love those little knowing moments between dork strangers.