It's generally all just a publicity stunt, celebrity culture at it's worst.The Gallaghers, Cheryl Cole, Lily Allen, 50 Cent, Madonna etc. etc. all use this as part of their way of gaining attention.Turns me right off them personally.Don't be fooled people - those who realise that though & find it entertaining - fair enough.It's such a bore to me though.
Some of it is done to re-inforce a point of view sometimes (at least you are finding some out about these celebs then - if it actually is a true belief & not just being popularist).There's some value to that possibly.Alot of it is just petty, pathetic attention seeking for commercial gain though.