Additionally I disagree completely that repression of an active sexual life can "change" a heterosexual male into a homosexual male - that is incorrect and misleading.
What repressed sexuality can do is cause psychological problems for a heterosexual male, however the church has shown it to be a problem - but an insignificant one.
I cannot justify the request for "non-marriage" for priests however, but that is my belief only and I don't expect anyone here to agree.
Agreed. Homosexuality is more complicated than that.
I particularly like this article on the subject. It seems to cover all aspects in a nicely balanced, sensitive way.