The Substitute hitmakers broke up in 1982 following an enormous world series of gigs which they insisted would be fans' last ever chance to see the band.
They reunited to perform at Live Aid in 1985 and got back together sporadically, including a tour in 1989 and a U.S. trek in 2000.
Although original bassist Entwistle died in 2002, Daltrey and guitarist Townshend are still touring as The Who with a band of backing musicians - and Daltrey admits he is still living with his "farewell tour" assertions from more than 30 years ago.
However, he is adamant the decision to call time on the band was to save Townshend's life as he was battling drug addiction and depression and could no longer cope with life on the road.
Daltrey tells Q magazine, "I called it a farewell tour in 1982 because Pete kept talking about the pressure of touring. So I thought, 'Let's remove the pressure, and maybe he won't kill himself', because he was involved with serious drugs at the time. I didn't want to lose my mate. But, yes, I did have to eat my words when we toured again in 1989."