Is he who dislikes marriage considered a sinner or an infidel?

Marriage is legislatively mandated and naturally desired. Whoever inherently dislikes it does not commit a sin or an act of disbelief (kufr).

However, whoever dislikes marriage because it is among the teachings and rulings of Islam, or because it is a Sunnah of the Prophet, peace be upon him, then this constitutes an act of disbelief, in accordance with the Almighty's saying: "That is because they disliked what Allah revealed, so He rendered their deeds worthless."

Disliking the rulings of Islam and the Sunnah of the Prophet, peace be upon him, turning away from them, and believing that something else is better than them, is considered disbelief.

Al-Hafiz said in Al-Fath: "Whoever turns away from my Sunnah is not of me," if it is a turning away and an extremism that leads to the belief in the superiority of one's own action, then its meaning is that he is not of my religion.

Thus, a person's dislike for marriage is not considered disbelief or immorality, unless it is a turning away from his Sunnah, peace be upon him, a dislike for the rulings of the Sharia, and a belief that something else is better.