Happy indeed. Much that is good would not have happened without it. Yet divisions within the church are never happy. That same Paul who brought us the challenges of Romans 9 et al, also warned us in the last chapter of that same book to mark those who stir up trouble and division among believers, and avoid them. The motive for such behavior is not love, but self-satisfaction. There is no upside to that. Wars over such doctrine are almost always "Islamic" in character, i.e., "if you don't like my position you are an infidel." A family member of mine was nearly destroyed by such a fight. I will never go there again. If you put your faith in the triune God and the resurrected Jesus, I take you to be family, though we may disagree on a multitude of issues. But I often find my love is not reciprocated, unrequited, as it were. I am one of those despised "Calvinists" and worse still a "Protestant," so I am deemed by those who should love me as an infidel, though we both labor at serving the same Master. This is tragedy, not comedy. Your tone is misplaced. Save your mockery for those who hate the Gospel, not those who love it.
Thank you for your post. If Christ is our focus, then what we have in common is more important than what divides us.