Yes, and since homosexuals spread disease and steer society's moral outlook southward, we'd be doing society a favor by throwing them in prison.
How is homosexuality not harmful to society? If every person was a homosexual, the human race would be extinct in a generation.
You can look this up if you want. A lot of countries are facing a potential population deficit in the near future. Countries like Italy, Britain, USA, Australia, etc. are having birthrates lower than what's needed to replace the current population. The only countries that are not having this problem are countries that persecute homosexuals. Obviously, there's a connection here.