Being a Jew seems fascinating to me insomuch as it encompasses two facets: one is the 'race' or ethnicity of being Jewish and the other is the religion. But how are the two intertwined?
One can convert to Judaism and become Jewish (as far as my limited understanding tells me). But what about if an ethnic Jew decides to convert to Buddhism, Christianity or whatever? After they convert are they still considered Jews by the Jewish community or are they something else? If so what? I cannot see this being the case since your ethnicity is not a badge, it is part of what you are whether you make a big deal of it.
For example I am a White Briton of mixed Irish, Scottish, Welsh and anglo-saxon heritage. For simplicity lets call me anglo-saxon. Now I was raised as a Roman Catholic and though I do not attend mass and even have days of severe agnosticism I have not been excommunicated so far as I know. Does this mean that when I was baptised I became a Roman? No. I am clearly still anglo-saxon and will be until the day I die, even if I actually move to Rome I will never be able to adopt that ethnicity.
So my question really is can there be a Christian Jew, or a Buddhist Jew? Or perhaps I am misunderstanding the whole deal. It occurs to me that you can have a semitic Christian, i.e. the ethnicity is not Jewish (though the shorthand is used) but rather it is semitic and Jew relates only to the faith? Except it relates to the twelve tribes of Israel.
Okay I have confused myself again. Can anyone explain the concepts to me in simple terms that I can understand?