Although I am very much all for circumcision, I do understand all the different views and opinions each individual has. I agree with alot that tenar says regarding ear piercing etc, but I think as parents we often have to make many different decisions regarding what's best or not best for our children, and just hope that we make the right ones and evertything turns out fine.
Ear piercing isn't done for any health benefit though, like circumcision or immunisation. It's funny how immunisation doesn't come under as much scutiny as circumcision, when there are many many many mothers & fathers out there that swear their children's development or medical problems only stemmed from and became apparent after their child's immunisation. The studies are still inconclusive on this too regarding these detrimental side effects of immunisations.
In saying all this, I choose to immunise my children and running these risks involved. God forbid one developed any serious side effects/learning/developmental problems, it's a choice I make, as their parent, choosing what I personally believe is in the best interest of my child. I feel the same about the circumcision choice I have made for my boys too. It was in the best interest of them, not me, and I hope I made the right decision.. only time will tell, but it's a risk I was willing to take, feeling the benefits outweighed the risks.

Mel x