According to the Bible, God created Adam and later gave him Eve as wife to SUPPORT him. So I really don't understand the issue of if you are married, you can't concentrate to serve God. Two, I believe are better and stronger than one.
Jesus said in Matt 19 : 10 - 12
People can choose not to marry in order to fully concentrate on the Kingdom
That is the idea behind being a Catholic Priest but some of them who don't have the calling fall by the way just as some pastors who are married still commit adultery