Our child was baptized several years ago. Upon coming up from the water, there was a distinct look of shocked confusion upon his/her face. I mentioned this to him/her last year, and received the reply "You noticed that?"
Yes, he/she was expecting some superpower to land, and to miraculously change his/her life.
Nope.
(I remember noticing no difference at my own baptism, but also was not expecting the same level of miracle effect.)