You're an idiot, Michael.
It isn't that the Jews have preserved Shabbat. It's that Shabbat has preserved the Jews.
No wonder you are so lost and without direction. Israel has always had a dual identity. There is Eretz Israel -- the land of Israel -- and Am Israel -- the people of Israel.
Abandon one, and you abandon the other. But thank you for explaining why you are such a pathetic, soulless individual. I don't sympathize with you, but I do pity you. Most people would find that insulting. You do not inspire sympathy, but you surely do inspire pity.
I hope you find your way.