I do probably come down a little hard on a group of people I call the 'blue chip gays.' I mean people who have managed to become very, very famous and are still very famous partly through staying in the closet, like Jasper Johns, Cy Twombly, Susan Sontag, Harold Brodkey and others.

Barack Obama's decision to come out in favour of gay marriage may be a historic occasion, but it is not an isolated one. His administration has been making pro-gay noises for some time; his demographic in the upcoming election is young and educated, precisely the group that favours equality for the LGBT community.

Why did mainstream America come to accept marriage equality? Gay leaders had made a convincing case that gay families were like straight families and should have the same rights. The American spirit of fair play had been invoked.

I'm an atheist, I always thought, 'This is it.' If there is going to be a heaven, it should be on earth. I feel much happier than most people. I'm fairly stoic about death, but I'm not keen on dying if it's going to be long and protracted. I don't have dark nights of the soul, except occasionally. I'm such a little busy bee.

Just like Barack Obama, my views on gay marriage have evolved, and now I am a reluctant groom.

In a memoir, your main contract with the reader is to tell the truth, no matter how bizarre.

I can remember in the late 1980s and early 1990s how many men with AIDS I saw everywhere in Key West. There were hospices and medical supply stores geared to people with AIDS. It seemed that every sick man who could afford it had headed for the warmth and the tranquillity and the gay-friendliness of the island.

AIDS had won gays sympathy; they no longer seemed the privileged brats that the general populace had resented in the 1970s.