Well that's not true, though neither of my boys are circumcised. In fact, as I type this I am realizing that I am unusually qualified to comment on this, as I was circumcised at age 16 (don't ask) and vasectomized at 38 or 39, so I can say that they are both equally traumatizing but the circumcision was worse.
I will say getting the nut-cut, while a terrible experience, was the best decision because it dramatically improved the quality and volume of sexytime with the wife.