Does not using the male organ for a long time lead to its atrophy or a weakening of the ability to satisfy one's wife in the future, especially with the current weak sexual inclination and the fear of falling into indecencies?

Whoever is unable to marry must practice self-restraint and lower his gaze from what is unlawful, in accordance with the Almighty’s saying: "And let those who find not the financial means for marriage keep themselves chaste, until Allah enriches them from His bounty." The Prophet, peace and blessings be upon him, guided those who could not afford marriage to fast, saying: "And whoever is unable, then let him fast, for it will be a shield for him." A Muslim must protect his limbs from what is unlawful, for whoever protects Allah's limits, Allah will protect him.