There is nothing wrong with Judaism. As a non-Jew who is an x-christian, I can tell you that Judaism is the most beautiful religion I have yet to come across. Trust me, the J-man is not the answer to all your problems - just look at how most xians behave! I grew up an evangelical xian, and I've never seen a group of more miserable people in my life.
These websites may help you make a more informed decision:
From the tone of the website you posted, I wonder whether you actually a Jew by birth, or just an xian missionary claiming to be a Jew to convert other Jews?
Best of luck to you if you are the former,
Juice-n-Diva