Tough one ... there's sufficient medical evidence of circumcision reducing the transmission of AIDS, that circumcision is being done on a large scale in Africa.
Aside from that I can think of some guys I know like it. I can think of some girls that like it.
But my vote is don't mess with nature.
We evolved the way we are because it beats the alternatives in the long run ... OK I know there's a huge debate around this. The list of ways we wish we could be different is humungous, and you can always make an argument in favour of intervention in specific cases.
But making changes (e.g. removing tonsils) usually results in unexpected side-effects. The key word there is 'unexpected' - our body is not built like a machine with each part doing one function, and parts of our bodies fulfil multiple functions we don't even know need to be done. Even the humble appendix is getting more respect these days than it used to!
Me, I like the covering my bro comes in, and especially like the feeling when it's pulled out of the way