BUT BREAKING A VOW IS A SIN. THE PRINCIPLE HERE IS NOT ABOUT CELIBACY; BUT ABOUT A VOW MADE IN FRONT OF GOD, WITH THE CHURCH AS WITNESS. PAUL ACTUALLY DID ENCOURAGE OTHERS TO REMAIN CELIBATE
The vow is not a vow God has commanded, and goes against His clear command. This is simple scripture.
When we have a positive commandment such as "go forth and multiply" or "do not forbid marriage" or stated principles like "marriage is honourable to all" or "He who finds a wife finds what is good and gains honour from the Lord" etc we know God likes something and wants us to do it, if at all possible. This is simple.
If some guys come along and say "take a vow of celibacy or you cannot have the sacrament of Holy Orders" and then say "swear it before God", this is clearly man made. If God sends this man a wife later on, and he accepts this, then God has done a good work. The vow before men was not in God's will in the first place.
Now, you say "but he made a vow and that means he cannot break it or he is in sin and will go to Hell (the place of sinners)". This of course is nonsense, for two reasons. A man can make a vow to be a Freemason, but when he becomes a Christian- is his breaking of the vow a sin? It was, according to Masonic ideals, made before God.
Likewise, there is a principle that states when a positive commandment and a negative commandment clash, the positive one overrules the negative. For example, it is forbidden to draw blood on the Sabbath, but if your son is born on a Friday, he must be circumcised on the following Sabbath. What to do? Well, in this case, the circumcision can go ahead because of the higher principle of a positive commandment, and this has been the practice since the start among the faithful Jews. So, if a man makes a vow that God hasn't commanded him to make, even if done in God's name, to be married is a positive commandment that brings abundant blessings and thus it overrules the vow invented by men. Christ speaks a lot about this principle in other cases when he speaks about the Sabbath to the legalists of His time. Check out the Sabbath controversies in the Gospels.
Besides, I hate to state the obvious, but even the Catholic Church allows men and women to get released from the vow of celibacy by special dispensation all the time. They at no stage consider themselves to be complicit in a sin by doing so.
So, it's really only a sin in the minds of a few in the laity.
This is a no brainer to me.