No, its not just religious reasons.
But still, it should not be done on babies without a medical need for it to be done. As babies cannot consent to having parts of their penis chopped off. I actually just watched a video of a circumcision, and am even more against it
I knew what the video was (was posted elsewhere) but curiosity got the better of me..and that poor child
Guy who did it also sucked the blood off. So parents watched while a stranger chopped a part of their baby off, unnecessarily..and then sucked its penis. Its just..gross.