@OP: There is no secular argument against homosexuality. None that stands any water anyway. Here’s an article you should read:
cltampa.com/dailyloaf/archives/2009/11/02/sexually-antagonistic-selection-the-evolution-of-male-homosexuality#.T-3a7ZH4WSo
(Basically (male) homosexuality is a byproduct of female hyperfertility like sicle cell anaemia is a byproduct of better protection against malaria. While some individuals may “suffer”, overall there is a benefit. With sicle cell more survive than without, with homosexuality there is more offspring to the family even with some members not procreating. The non-procreating members also can function as babysitters. Kind of like bees and ants where only the queen procreates.)
snort
- Nobody claimed that homosexuality is normal aka the norm. Obviously heterosexuality is the norm. Homosexuality however, like heterosexuality, is natural.
- Homosexuality in animals is rare, therefore homosexuality in animals doesn’t exist. Yeah, right.
- It would be nice to see some evidence to his claims (i.e.the difference between humans and animals), unfortunately, not suprisingly though, there is none.
telegraph.co.uk/science/science-news/5550488/Homosexual-behaviour-widespread-in-animals-according-to-new-study.html
Homosexual anal sex is no more or less risky than heterosexual anal sex. Also, according to this logic you should be fine with female homosexuals then.
That is such a load of …
Procreation argument? Really?

Should we outlaw the mating of infertiles too? Ah yes, their numbers are so insignificant that it we shouldn’t bother. Funny how that doesn’t go for homosexuals who are a mere 10% of the population.
One also can’t separate voluntary infertiles (aka those who use contraception) from fertiles? One can if we know which doctor prescribed contraception to whom. One could also simply outlaw any contraceptives, like Romania in the past.
Children need father and mother? O rly?
newscientist.com/article/dn19014-children-of-lesbian-parents-do-better-than-their-peers.html
newscientist.com/article/dn6670-lesbian-couples-raise-welladjusted-teenagers.html
People are having less children who are better educated, on a planet that is overpopulated, how terrible.
Does this guy think before he puts such tripe down?
P.S.
ncbi.nlm.nih.gov/pubmed/8772014