Which is exactly what the Catholics in this thread thus far have said. No-one has claimed that celibacy for priests in the Latin Rite is a dogma or doctrine of the Catholic Church because it is not. It is a matter of Church law and if a Council or the Pope wanted to change it tomorrow it could be done easily.
The current Code of Canon Law (1983) for the Latin Rite of the Church has a great many rules and regulations in it, and not one as far as I am aware deals with doctrines or dogmas. Priestly celibacy is one matter of temporal, changeable canon law.
Catholics are under no obligation whatsoever to think that these laws are good, and many Catholics believe that priestly celibacy should be changed. They are not dissenters or heretics for thinking this. Catholics must obey Canon Law but it is not a matter of Faith and we don't have to believe that it's good. However, many Catholics agree with priestly celibacy, and all they people have been doing in this thread is explaining the reasons behind it and why they support it.
The Latin Rite of the Catholic Church is one among 23, and it is the only one as far as I am aware that requires priests to be celibate, as different Rites have different Codes of Canon Law.