The Shame singer said he won't be starting a family with wife Ayda Field, 31, just yet, even though she wants to now.
The 36-year-old, who married Field in August after four years together, told BBC Radio 2: 'Ayda wants to go straight away but I'm putting it off for as long as possible.
'I'm really selfish and I do quite like doing nothing all the time.'
The Take That star added: 'When I get the chance to do nothing I go past [London's] Hyde Park and look at mothers with prams and dads with footballs and think: 'Oh no!'
'I already look knackered as it is, heaven knows what's going to happen to me once I have a kid.'