All the more reason homosexual behavior should not be protected by the government. It's wrong, immoral, sick and always ends in death.
Whatever the merits of the first part of your statement, it is pretty clear that many gay men and lesbians live to old age. Though AIDs has cut a swath through the gay male community, AFAIK lesbians live as long as straight people.
The article is correct, however the science is not accurate in saying that anal cancer is caused by fusion of sperm with other cells. I can't understand why the author used a 30 year old study.
The most probable cause of anal cancer is Human Papilloma Virus, just as HPV causes 99.7% of all cervical cancer. The connection wasn't known in 1977.
http://www3.interscience.wiley.com/cgi-bin/abstract/109061862/ABSTRACT
http://www.cmaj.ca/cgi/content/full/169/5/431
http://www.ncbi.nlm.nih.gov/entrez/utils/lofref.fcgi?PrId=3051&uid=12639077&db=pubmed&url=http://www.annals.org/cgi/pmidlookup?view=full&pmid=12639077
The common denominator between these two diseases is the sharing of disease - if virgins married virgins and there were no sex outside of marriage, these diseases would be very, very rare.