Is the Pope Serious?

Pope Benedict should extend his welcome to all Protestants who profess the Apostles and Nicene creeds. This would extend an invitation to members and congregations of the Lutheran, Presbyterian, and Methodist churches. Members of these groups might respond more favorably than the Anglicans seem to be -that is, if Christians seriously and earnestly desire a healing of the centuries long separation between Christians .
The question for both the Vatican and so called main line Protestant denominations is, "Are they serious about visible Christian Unification?" If they are, then the invitation of the Vatican to join together in organic unity is the best chance in recent memory for such unity to happen.
The inter church dialogues of the last forty years have revealed great convergence of teaching and practice among the formerly united Christian denominations. On the major issue of Jesus, the groups agree that Jesus is the promised Messiah of the Old Testament, that he is born of the Virgin Mary of the Holy Spirit, that he lived and taught among us as the fulness of God's self revelation and that Jesus was the completion of the covenant promise made to Abraham. As stated in their formal creeds, these groups all agree that Jesus suffered as an atonement for sin, was crucified, died and was buried and that on the third day he rose from the dead, ascending into heaven and he will come again to judge the living and the dead.
On the second major issue regarding the being and nature of God, the main line denominations agree that God is a trintiy in unity and a unity in trinity. This monotheistic interpretation of the nature and being of God was affirmed as, "That which should everywhere and at every time be taught among us."-- after three hundred years of speculation, discussion, argument and debate some of that debate heated and vehement.
These two core issues are at the heart of Christianity and separate the Christian Church from its Jewish ancestors.
The debates of the middle ages by people of good will revolved firstly, around how these two great beliefs of Christianity should be applied in theology, systematic thinking, philosophy, social teaching, worship practice and everyday life. Secondly, the great thinkers of that era debated about how the Church as an organization should be lead and administered.
Today, the wars that revealed the great divide of opinion on these issues are ended. They were wars of words but sadly also wars between ardent believers on both sides who were willing to use the cold steel of physical combat to promote and/or defend their position. And very sadly, thousands of people died in the passionately pursued conflicts. (Note that emergent nationalism, regionalism, secularism and pure power politics apart from religion were all major players in the wars. After all, there was no Christian army. Yes, there were armies sanctioned by Christians but even the Vatican of that time used mercenaries.)
So, since the major theological differences between Christian groups have been decided in favor of unity of belief, and since the very secondary issue of ecclesiastical administration is for most of the world a non issue, then why are the denominations separated?
Could it be that Christians are complacent and no longer care about being One Holy Christian and Apostolic Church? Or have the leaders of the Christians grown lazy and happy with the status quo because the "way it is" is in keeping with their petty personal agendas?
Academic freedom in the classroom (say leftist liberalism) is a non christian issue. Feminism and homosexuality are current event issues of long standing in world society but when measured against the core theology of Jesus, the cross, the trinity and salvation through faith, they both take back seats. And gay marriage, is this equal in value to the over arching issue of a unified Christian Church confronting secularism, modern fascism and the movements and machinations of the new world order?