Rational & Irrational Thoughts?

I think I'm a relatively rational person. I think the earth is billions of years old, rather than thousands of years old. I think human beings evolved over millions of years and we're still evolving. And I think people are born gay or straight and it's not something they choose. But then I have some relatively irrational thoughts. I think bug spray attracts bugs. I think sunscreen causes skin cancer. And I sometimes think that God, in some form, exists.