Why christians get married and have kids?

If Christians stopped getting married and having kids, God would finish his job faster, the second coming could happen faster too. How? Christians instead of marrying and spending their time pathetically raising kids, could go around the world preaching the gospel and converting souls, instead of adding millions more new souls to the world each year, that will need God's salvation.

Paul in the bible even meant that. When he said that it's better for man not to marry so he could take care of God's stuff.

If nobody had kids, God would finish his job faster as there are no more souls born. Jesus would come back faster.

So why are christians still having kids?