Is it wrong to have a buttcrack fetish?

So, ever since I was in fourth grade, I have been obsessed with showing my buttcrack. In 4th grade I saw this one girl, who I had a crush on, buttcrack showing and I fell in love. So, after that experience, I decided to show my buttcrack. When I was in 7th & 8th grade I would show a lot of buttcrack at school and on the school bus, and I LOVED it. I also loved seeing other peoples buttcrack as well. This carried over in high school and college years (which I am currently in college). Since high school, my jeans have been kind of tight and so it was hard for them to stay on my ass, so they would always slide down. I always wear a shirt that is not super long so my buttcrack can be displayed while sitting in class, squatting down in the hallway, or leaning/bending over for something. Also, the sight of a girls buttcrack is an instant turn on and I love it. Is it bad that I have a super big buttcrack fetish?