Is desire for beardless youths due to Allah's wrath, or is it a trial for which the patient will be rewarded? And is it obligatory to inform a future wife of this desire? And can this desire affect a person's feelings towards their children? And is it permissible to repel oneself from this desire by using excrement?

As long as you strive against your soul and repel evil thoughts from it, you will be rewarded. It is not permissible for you to defile yourself with impurity when you feel lust. Rather, you must resist forbidden lust. Hasten to marry when you are able. You are not required to inform your wife about this matter; in fact, it is not permissible to inform anyone about it unless there is a recognized benefit. So, conceal your affairs, occupy yourself with beneficial matters, seek Allah's help, and hold fast to Him.