what constitutes a 'legitimate' child? married where? by who?

Question

some say if you ain't married in a jewish temple, ya ain't really
married. some say if ya ain't married in a catholic church ya
ain't really married. some say if ya ain't married in a the right
and proper mosque, ya ain't really married. in each sect and
cult, they feel they are the only holders of sacred rites. some say
only the govt. can give 'sacred orders' and 'sacrament' of
marriage. some say, only love can bring about a true marriage.
some say, only the fires of lust, can bring about a true blue
marriage. some say that when the roaring sparks of lust
are gone, the marriage no longer exists. boy if that was
true, people wouldn't stick with the progeny or products of
the marriage long at all. so whose children are really legitimate?
illegitimate? all the dirty jokes told about sons of whores or
about bastards all down through history. setting themselves
up to be holier than them. the high and the mighty have fallen.
he who is exalted is abased. vice versa.

Answer 1

OK, trying to translate your "question" back into English -

The definition of a "legitimate" child has always been "one that is born within a marriage," no matter what kind of marriage that is. Marriage is defined by the state, which normally includes filling out lots of paperwork, no matter what religion is involved.

I agree with what you seem to be saying [sorry, I have a hard time understanding, what with your lack of grammar or capitalization or sentence structure] - that people should not judge a child just because its parents chose, or did not choose, to have the state recognize their union. "Illegitimate" certainly has connotations of "unworthy" and somewhat "less" than a full "legitimate" person.

However, in these modern times, you almost never hear any questions about someone's parentage, in polite society. It is very common for a child to not share the name of one of their parents. Only truly ignorant or inconsiderate people would ask such questions of a child - or an adult.