Health,
Actually you are mistaken without a Belief in G-d all morals are unable to be proven incumbant on the individual.
This point was made briefly by RSRH in the very begininng of The Nineteen Letters and is actually agreed upon by most honest non-jewish philosophers.
However their arguement is that on a communal level there is a need for morals.
However even they agree that it is only morals that are needed for the smooth funcioning of society that can be forced and even they must be agreed upon and are not “absolute”.
The crux of the reason why the Founding Fathers of the USA made the point repeatidly that life and liberty are derived from G-d and are not products of humans is becuase that makes those rights “absolute” instead of reletive.