Jesus never said "To procreate is a sin." He did say not everyone is 'called to be married', yet he accepted Peter as a disciple, and even healed his mother in law.

Do people on islands in the middle of the ocean who have never had contact with any other humans have to worry because they never repented in Jesus name?>

If you have never had any contact with other humans, you have no worries. God is gracious, when those who live by the light they have face God, they will not be judged on the basis of knowing Jesus' name, but will be justified on the basis of their choice to live by the light they have or not.

Those of us who know Jesus should tell others about Him, but as Paul says, we are to do it in gentleness and respect. Jesus himself rebuked his disciples when they wanted to call down fire on a city that would not admit them. This is a far cry from how the Crusades operated. (Jesus said "Fear not!" more often than he said almost anything else)

But I refuse to swear fealty out of fear, that has lead far too many down the wrong path.>

I agree, God wants you to come to Him because you recognize that he loves you, and will run to you. (NOT because you fear hell.) That is what the story of the Prodigal Son is all about.