Gosh, Pedro... That's a bit harsh!
I don't think that my dd2's confirmation was 'disgusting'. I think that she made a conscious decision to make a public statement of her faith, and I know - because we talked about it - that she understood what she was promising. She also had preparatory lessons and attends church regularly.
She had actually asked to be baptised, rather than confirmed, having not been baptised as a baby. (I had a lengthy agnostic period, and didn't feel able to make the baptismal promises on her behalf when I wasn't at all sure what I believed myself; I have returned, very happily, to my faith in the last couple of years.) The request came from her, not from me; it was not, as you say, 'an indulgence of the parents'. I have another dd (dd1) who chooses not to go to church. She knows about Christianity and is interested in it from a philosophical perspective, but she doesn't believe. That, too, is her choice.
My dd2 knew that she didn't need to be baptised, but she asked for it because she was ready to acknowledge her faith and her full belonging to the Church family. Surely the fact that she was able to articulate and request this for herself suggests that she understood what baptism and confirmation meant, and embraced their implications for her as a young Christian.
The implication that the Church would only baptise and confirm people for the money (I presume that's what you're implying) is just wrong. I did not pay a penny for her baptism and confirmation. The Church opened its arms and welcomed my daughter, it did not buy her. That really would be disgusting - but it's not the case.
(Of course, you are entitled to your view that confirmation should be reserved for adults, and of course that is the practice in some churches. I respect that. But please don't disparage my daughter's desire to embrace her faith.)