Why do I automatically look at EVERYONES butt?

I’m a Straight guy but I tend to notice that I look at everyone’s butt even tho I’m not attracted. I’m straight yet I even notice that I look at guys butts as well. I even look at elderly people’s butts. I LOOK AT EVERYONES butts. It’s honestly has disturbed me greatly. It’s like my eye is magnetically attracted to butts.
Why do I automatically look at EVERYONES butt?
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