Why Physical Temples?
The need for physical temples has been questioned since the days of Solomon and by many of the Old Testament prophets. (e.g., why does God need a temple to dwell in when He has created all and the Earth is His foot stool? The sacrifice of a contrite heart and obedience is better than the sacrifice of animals. Our body is the temple of God.) The book of Hebrews proclaims that Jesus was the final sacrifice for all and the great high priest who entered into the holy of holies for all thus fulfilling forever the role that the old Jewish temples had served.
Similarities of modern temple rituals to those of ancient times appears to be from imitation rather than revelation. The similarities to Masonic rituals cannot be easily dismissed. The symbols of the remnants of the medieval crusading holy order of the Knights Templar have also been copied, although displayed upside down or in different positions.
John's Revelation of the New Jerusalem specifically says that no temple was there because Christ in person was the temple. "And I saw no temple therein: for the Lord God Almighty and the Lamb are the temple of it." (Revelation 21:22)