There is an interesting commentary in the Christian Post on a report from The Barna Group, comparing the age and participation level of church-goers and those that call themselves Christian.
Its conclusion is that twenty-somethings participate little in church life. According to the study only one fifth maintain a spiritual life consistent with their school experiences. In otherwords as Christian teens mature into adults, their faith is strong, but when they go to university and the world of work, they drop away.
The study only measures spiritual activity, rather than that anything else, so appears to be a little legalistic in the sense of having a list of checkboxes. But these do include personal bible study and prayer.
This seems to go away from what is expected. I always thought that church kids, with Christian parents, would often make early committments to Christ, but as they went through their teen years would be challenged and come into adulthood with a different and more mature understanding of their faith. With some, apparently completing backsliding, in the sense of completly denying any faith at all.
I always thought that if they made it through their teens they would be committed Christians for life or maybe it is because the teen years are extending into the twenties as youth continue to live with their parents and put off career decisions with temporaty jobs.
Maybe that means I should not give up on those friends who appear to have no faith in their twenties, perhaps the real awakening will occur when they mature in their working life.