So when Bishops and Sawami's don,t do marriages such cases takes place because having relation with women is Man's requirement and when he cannot do it by Marriage he goes towards wrong ways. Islam is the only religion of the world in which It is necessary to marry if it is possible for you financially. In other religions if you want to be religious you cannot marry but in Islam if you want to be religious it is necessary for you to get marry. Prophet Muhammad Saw said Nikkah is my Sunnah and whoever turned away from this Sunnah is not from us. there are several Ayats and Hadiths about Marriage in Islam.
obligation of Marriage in Islam proves that Islam is Natural way of life which guides us in Living our lifes correctly. May Allah Swt help everyone in doing Nikkah according to Islamic guidelines.