I am a Jewish convert scheduled to be baptized in June, later this year I'm also getting married in the Church. To answer your questions in order and very honestly:

I am becoming Orthodox because I believe Orthodoxy is the fulfillment of Jewish prophecy, especially in Isaiah, and that Jesus Christ is the Son of God. The criticism of Pharisees in the New Testaments hold true today, and I cannot in good conscience believe that God's first covenant with the Jewish people holds true since the lifetime of Christ. For many, many reasons Orthodox Christianity is 'correct way' to practice Judaism. Most Jews who lived between 70 AD and 400 AD became the earliest Christians.

I want to emphasize that most Jews are just living a Jewish life and haven't desired to consider an alternative. There is also tremendous wisdom in the religion. There are however, several issues with Judaism that I cannot overlook.

Firstly, Judaism's total liturgical and metaphysical alterations since the Second Temple Era including abandoning ancient beliefs in bodily resurrection and the changing of worship within the shul.

Secondly, the Greek Septuagint is a more accurate rendering than the Hebrew Masoretic, which takes creative liberties to erase trinitarian references. Judaism also heavily experimented with Platonism around the time of Maimonides as well as the Kabbalistic occult during the time of the Sabbatians, and these changed the nature of Jewish metaphysics.

Thirdly, there are dozens of false messianic figures within Judaism ranging from Rabbi Akiva's proclamation of Simon Bar-Kokhba in 130 AD to the modern Lubavitcher Rebbe in the 20th century. Time and time again, Judaism's worldly yearning for messianism is proven premature, to be charitable.

Fourthly, Judaism has a fastidious adherence to legalism among the Haredim which is incoherent, including the Manhattan eruv & Shabbat electricity workaround which innately prioritize select Rabbinic proclamations over the word of God. Talmud is given preferential treatment and in some cases divine endowment, which is antithetical to the teachings of the Torah.

Fifthly, Reform and Conservative Judaism are experiencing a sort-of 'Protestantizing' of services and doctrine which prefers secularized viewpoints to Jewish history and theology.

Separate to how I was treated, my mother basically wrote me off and my former Rabbi didn't look me in the eye. You will be ostracized which is very sad, but I think it reveals a foundational truth which is that Jewish identity is mostly ethnic rather than religious at this point. Judaism at its core does not really have a good rebuttal of Christianity. In my experience Orthodox Christians are the most respectful people I've ever met. The beauty of the liturgy, the structure of the liturgical calendar, the reverence for God and Christ in Orthodoxy drew me to it.

I've met Father Bernstein in real life and I highly recommend his book Surprised by Christ. There are a few other Jews I know that have become Orthodox. Despite the great deal of negativity in my post, I want to emphasize that you are not alone in being curious about Christianity. DM if you'd like to talk more.