Yesterday the House of Lords vetoed Parliament's attempt to outlaw the criticism of 'sexual conduct and practice' on the basis it would inhibit free speech. It's caused a fair amount of consternation amongst the gay community concerned about homophobic attacks and, indeed, the more vociferous have likened the decision to sanctioning racism.

However, I'm not so sure.

If it's true that people are born gay, and I've always believed that to be the case, it would suggest that homosexuality is a pre-defined, genetic predisposition. But that doesn't actually make sense. Why would we evolve with a gene that doesn't encourage procreation? It's a Lemmings Gene. Surely it would've disappeared within a few generations?

I'm therefore starting to consider whether homosexuality is, at its root, a social construct. And if it is, that relegates it in the Great Pantheon from the incontrovertible Racisms and the Sexisms of this world to a slightly less sacrosanct level. It relegates it to Marmite.