To get back to the original questions,
I have heard it said that if you attend DL everyday for a year (I think I was told a year, correct me if I am wrong) you will hear the entire bible.
IF you attended all services, as do monastics you would hear the entire Old and New Testament in one year.
What about all the geneologies? That would be both exhausting and quite dry.
It is important in the context of salvation, the fulfillment of prophecy, and the role of the Messiah. It is important to remember, because without these understandings of our dogma the Truth of what Christ is and taught are lost.
The geneaologies are read in context of the birth of Christ, and so are read at the time of the Nativity.
The Song of Songs? SOS is beautiful, but as of now, I can't picture it in the context of the DL.
The singer is Christ, the beloved the Church.
What purpose do the geneologies serve?
Consider who wrote the geneaologies and when. First, the OT geneaologies are written by Hebrews who are very concerned with the hereditary nature of the Levitic priesthood. Geneaologies trace Hebrew decent from Abraham, and from Abraham to Moses and the entry into the promised land. When the Hebrews are taken by captivity to Babylon, the geneaologies continue to connect these displaced people with their covenant with God. To this day, the oldest geneaologies in the world are those maintained by Jews since the time of the Babylonian captivity. And, in Genesis God tells the snake that enmity will exit between the woman and you, and that her descendant will crush you with her heel. In this instance, God is revealing that eventually, in time, someone descended from Adam and Eve will restore humanity to the image and likeness of God that it had before the Fall -- in other words, the plan of salvation is revealed and promised.
When Christ is born, the geneaolgies are included by Matthew, who is primarily writing to the Jews, and by Luke. The purpose of the geneaologies in these contexts are to show that the Messiah is the fulfillment of the promise of Genesis. Elsewhere the prophets tell us the Christ will be decended from the Davidic royal house -- so he has kingship, and from a Levitic house -- so he is high priest. The geneaologies show to Hebrews, not Gentiles, the fulfillment of salvific prophecy AND the status of the Christ, King and High Priest.
As a child, I read and re-read the OT, but until I was instructed by my priest, I missed the entire beauty of the OT anticipation of the Christ, salvation, the origin of the mysteries, and prophecy. I think it is very difficult for Protestants to grasp the fullness of the OT because through centuries they are so distanced from the continuity between the OT, NT and Orthodoxy. If your parish does not have an OT Bible Study, you might want to ask if the priest can host one. It took our parish eight years to get through the OT, but WOW! we sure learned a lot! It has illuminated the NT because I understand so much more. I'm sure I missed a lot, too. I'd do it again, if I got the chance.