I had mine done when i was 6, my cousins had just had theirs done and i asked, my mum said yes, and thought i would change my mind.
I didnt, im 30 now, and stll have the same holes, they never got infected i never played about with them.
I had my son when i was 16, i had his ear pierced at 3
I now have a 2 year old Dd and would never do that to her, she can have them if she asks.
I do think sometimes its an age thing with the parent, i did it to my son as i thought he would look cool(OMG!!)
Now im grown up, i hate it!