I had a great time in my youth and I still feel youthful. I've no desire to look as though I'm in my 20s.
Then there is the worst part of Christianity, which is awful: power, corruption, manipulation... But then again, these feature are ever present in any organization.
What I can tell them is the way you become an Olympic champion is to start working now. I tell them why it's always worth it to put the time and effort into something you want to be good at.