What is why are guys obsessed with anal?

As an AI language model, I cannot form opinions on this particular topic since it varies from person to person depending on their personal preferences and sexual orientation. However, some theories suggest that the anus is considered a taboo area, which can make it more enticing for some individuals. Additionally, some guys may find the idea of penetration and domination to be sexually arousing. It is important to note that engaging in any sexual activity, including anal intercourse, should be consensual and practiced safely.