Morrissey's autobiography is done, he just isn't sure if anyone's going to read it. The former Smiths frontman confirmed that he has completed the first draft of his memoirs, and it's already about as long as Moby Dick.

"I'm really not that interesting, so I don't know why I've written so much," Moz admitted in an interview with BBC Radio 4's Front Row. "I have been through the whole life. I just wonder if 660 pages are too much for people to bear. And then I sit down and think, well, are six pages too much for people to bear? I really don't know. [It's] baffling."

The much-anticipated Mozography is almost three years in the making, and the singer hopes to publish the tome in 2012. "I've reached the re-drafting, trimming stage," he said. But despite reams of material – 200,000 words, according to interviewer John Wilson – Morrissey has yet to find, or choose, a publisher. Last year, an editor at Faber said it would be "the fulfilment of my most pressing and persistent publishing dream" if Morrissey brought his "much-rumoured memoir to the House of Eliot". This week, the 51-year-old quipped that he wants to see the book immediately published as a Penguin Classic.

Elsewhere in the Front Row interview Morrissey repeated his past criticism for David Cameron, joining former bandmate Johnny Marr in "forbidding" the prime minister from listening to the Smiths. "It's a moral issue," he said, highlighting Cameron's support for hunting. Morrissey is a vegan. "Killing a stag is like killing a child ... When you make music you're very happy that anybody listens, whoever they may be, but somebody with such an extreme lifestyle as David Cameron, killing stags as I say as a hobby, sport, you're mystified – you just can't see how it joins." Although Cameron has attended "many, many" of his concerts, Morrissey said, the two have never met. "Sometimes you see people [who like your music] and they have a lifestyle which is everything that you oppose."

Morrissey's new collection of greatest hits and rare cuts, The Very Best of Morrissey, is released on 25 April.