Should I agree to marry a young man who is religious and of good character, but he smokes and associates with girls, even though my conditions for a husband are that he be a role model for my children and fear Allah, or should I wait for a better husband with the fear that no one will come or someone worse will come?

The correct standard for choosing a husband is religion and character, as stated in the Hadith (definition): "If someone whose character and religious commitment you approve of comes to you, then marry him." Smoking and befriending foreign girls are reprehensible acts. However, the main consideration is whether the suitor is, in general, pleasing in his religious commitment and character. If this young man is such, then do not annul the engagement. Instead, advise him and help him to repent, while keeping in mind that the suitor is a stranger to his fiancée before the marriage contract. It is advisable to consult with family and perform Istikhara (definition).