Thank you everyone for your warm welcome! To clarify where I am coming from, I am not here to criticize anyone or to assert my existing beliefs. I approach this subject in a spirit of enquiry. I am very grateful to read your responses to my questions to help me think these issues through.
Even if Orthodox rituals could be traced back to the earliest Christians (and it seems to me that that is only true in broad outline and not in many of the details insisted upon today), I am not persuaded that the earliest church rituals should be mandatory for all churches in later generations where different contexts/cultures may make it desirable to modify those rituals. I certainly believe that apostolic theology, doctrine, morality, and ethics (enshrined in the New Testament) are binding on all Christians everywhere for all time. But I don't think it necessarily follows that kissing an icon or crossing oneself or dipping a baby 3 times in baptism water should necessarily be mandatory for the church today.
Do you believe the Church Fathers had the same authority as the Apostles? If a Church Father such as Ignatius or Justin Martyr or Chrysostom described a particular pattern of church practice, I don't think that invests the practice with an apostolic stamp of approval. Anastasia, you said that the Liturgy of Chrysostom is very similar to the Liturgy of James, but the fact that it is only similar and not identical implies that Chrysostom felt at liberty to modify an apostolic prescription. So in principle you cannot be against the idea of modifying apostolic instructions about church practice? Furthermore, anonymous authors of ancient documents sometimes falsely alleged that their works were written by prominent theologians in order to gain greater recognition for their works (e.g. the Gospel of Thomas), so what evidence is there that the author of the Liturgy of James is either James the brother of John or James the son of Alphaeus?
Taking the veneration of icons as an example, I don't think icons are wrong per se because venerating an icon is definitely not the same thing as, for example, worshipping a golden calf. But due to man's propensity to idolize anything, I think it is very dangerous to venerate a picture of a saint when you are trying to worship God. I think it is very easy to unconsciously slide from acceptable worship of God into idolatry. In the same way, I would not recommend a man struggling with alcoholism to visit a pub for a glass of orange juice. If you can kiss an icon and still worship God purely, then good for you. But if for me such a practice would cause blasphemous and idolatrous thoughts to arise in my heart, would I be looked down on if I became an Orthodox Christian but abstained from kissing icons?
FenderTL5, you said that the first church meetings held in people's houses carried over some customs they inherited from the temple worship and synagogue prayers. Did Old Testament Jews use icons? I know Solomon's temple had statues of cherubim over the mercy seat and engravings of palm trees and lions on the walls, but did the Jewish priests kiss pictures of Abraham, Moses, and Samuel? In Acts chapter 15 where the apostles wrote a letter to the Gentile believers about what rituals they were required to follow, the list was extremely short, it did not include any of the distinctive Orthodox rituals of today, and was apparently designed to avoid putting a stumbling block in the way of Jewish non-believers living amongst Gentile believers rather than being ordained by God for the worldwide church of all time.
Prodromos, you said that the Orthodox tradition is genuine because it produces saints. However, I don’t think modified behaviour is the best way to decide whether a particular tradition is genuine. I suspect there are reformed sinners in every religion. You won’t have to search long before you will find Buddhists, Muslims, New Agers, Mormons, etc. who chalk up their reformed lives to the power of Chinese wisdom, Allah, psychotherapy, or whatever higher power they submit to. Catholics and Protestants also have their fair share of transformed lives, such as persecuted Christians sustained while being tortured; drunkards and drug addicts being liberated from the habit; wife-beaters made loving husbands and fathers; adulterers and murderers finding a sense of forgiveness, etc.