We had a year with no YC at u15, it was hard work, the "logic" was that the sweet innocent u15s would never be cynical, oh how wrong they were.
Only lasted one season. Refs were not keen to do u15 at all near the end of the season.
Womble ref, don't take the criticism to heart, I came on here with a problem match a while back and looked for sympathy with my problem, instead I got my arse kicked and told to look at my own game.
Truth was it was my problem and not the players, I got some harsh (deservedly so) advise, took it on board and haven't looked back since.