Jesus,our Lords peace be whit You.
First You maybe should read the Bible,and You will understand it better. But lets take a closer look on this topic.
Jesus had a mission to do and complete,to die for our sins,and help people in a way that made them what we now call christians. Simply,His mission did not include marriage. And because He all the time knew what would happend,to say it easy,why leave a widow “behind”? A catholic priest do his work “in Christi Persona” and live in celibacy to have ALL the time he need to serve the Church and his parish,if he would be also a dad and husband,he would have to split his time between both work and family,and that can’t be done the way the Church think about it. I have a call to priesthood,wich sadly can not be fullfilled due to a marriage,divorce and healt,not to mention age,I am 50 and I suffer from depression and panic-attacks,and yet this call tells me what to do,and say,and I do not “beleive” I am a priest,some of you may think that "oh boy,one nutcase moore"but I need to live in celibacy,and wos happy when my marriage ended for reasons You may know well.
But back to the topic,that is why Jesus did not marrie,He had a mission,and it took all His time. So the ansver is pretty simple in the end.