I don't agree with it personally. If adults want to, fine, but I don't think it's right to do it to babies. Of course, if it is your religion or culture to do it, then I won't tell you what to do. but just be aware that you are only doing it for religious or cultural reasons, no other.
I know it is the standard practise in Nigeria but also be aware that it is not standard practise in most of the world at all. Very few men overall are circumcised. Only 20% in the world. do you think that the other 80% are all unclean or diseased? Of course not. It is incredibly rare in the UK and as others have said, it is seen as a Jewish and Muslim habit, Christians don't do it here. In my whole life I've only known one British man who was circumcised and most people will never meet anyone who is. And I think circumcised penises look ugly compared to normal ones. See? It's just a case of what you are used to looking right.
You should be aware that the 'health' claims are bogus - all the major medical authorities in the world say that there are no health benefits. Even the American medical association says so and it is still very common practise in the US for cultural reasons.
Cleanliness. A dirty person is dirty all over. A clean person is clean all over. We don't chop off our ears just because some dirty people don't wash behind them properly.
Danger - this is a surgical operation you are performing on a very young baby. Even in the west with modern medical facilities babies have died because of circumcisions - they can get infected badly. Also, sometimes the operation goes wrong and the privates is left deformed. These complications are very rare, yes that's true, but they do happen and parents should be aware that they are taking a risk with their babies health and even life. Any operation can have complications. In a few very rare cases the little boy has completely lost his privates.
See here for photos of deformities caused by circumcisions -
http://www.circumstitions.com/Restric/Botched3sc.html.
the attached photo shows the result of gangrene developed from circumcisionPain - you inflict great pain on the baby. Did you know that the foreskin is 100% joined/stuck to the privates tip until a boy is about 5 years old - in exactly the same way that a fingernail is stuck to the skin underneath it. It doesn't move or retract at all. When they circumcise they have to pull it off - just like pulling a fingernail off the skin below it - and the baby is left with raw skin afterwards. Now imagine how painful that is. Now imagine that you have a raw wound and get pee and poop on it as well that people keep cleaning off.
Function - it does have a negative effect on the sexual function. I know you don't want to hear that and you'll all deny it because who wants to believe that about himself but really, unless you've had sex with both circumcised and uncircumcised men, how would you know?
For a start - The skin is much thicker and less sensitive on the tip of the circumcised privates once you get to middle age and it has been exposed for years. This is a process called keritinisation. The tip is just protecting itself with thicker skin after you've removed its natural protection. Want to know how different it is? The skin here is very similar to your lip. Tough the outside of your lip - the part that is exposed to everything. Dry and although it is fairly sensitive it isn't extremely sensitive. Now touch your lip right inside your mouth. Moist and very highly sensitive. Yet it is the same lip and exactly the same skin. The outer part becomes dry, thicker and less sensitive because it is permanently exposed. The same thing happens to the man's privates. An uncircumcised man's privates skin is moist, soft and far more sensitive than that of a circumcised mans. Honestly. why would I lie to you?
Secondly, the forskin performs a useful function by reducing friction and allowing much free-er movement.
Thirdly, it is a large area of skin full of nerve endings. The nerve endings are both inside and outside the foreskin and it is very sensitive. One estimate is that the privates loses one third of all its nerve endings when you circumcise. Poor men!
Fourthly - you also lose the frenulum. this is a tiny piece of skin that runs between underneath your privates and the foreskin. It may be tiny but wow it packs a punch. One every man I've ever known this is the most sensitive area of their privates. Literally 'fireworks' sensitive.
So if you are a parent, make your choice, but do it with all the facts. Don't do it just because you think everyone else does it, because worldwide, you are strange if you DO circumcise your children. Even if it is common within your culture then think about it properly before going ahead.