I’ve belonged to Catholic and Protestant parishes. There are pro’s and con’s re married clergy. The most obvious is that an unmarried Catholic priest is more fully dedicated to his flock and ministerial duties, whereas a married Protestant minister often has conflicts between interests of his family and his parish. Having a supportive family, on the other hand, often provides a perspective that relates more closely to the parishioners.
as well as other problems given that some priests moral compass is, shall we say, backwards?
If priests are allowed to marry, unintended consequences will sprout like dandelions. Of that I have no doubt.