Take yourself back to childhood. Think of all the things that you didn't like, but you like now. Perhaps it was certain vegetables, or a type of drink. Maybe it was spicy food. It could have been certain sports, or even preferred looks. And then also think of all the "I will never" comments you made that you ended up doing later in life, and enjoying.
If I look back to my childhood and think about my preferences at that time, I think they were quite ordinary. Although I have no interest in them now, but to be honest, the things that were on my childhood list are more desirable to young people today. When I think back to my childhood, I feel so good and how sweet that time was. If I could have that childhood life back! I would never want to grow up!
The thing is, they are never growing out of their childish desires.
That is what they are doing. The problem is, they are growing up.