https://en.wikipedia.org/wiki/Nederlandsche_Coca%C3%AFnefabr...
Looking back, there were many very good reasons why the religions were not put in the constitution.
I supposed you could try to create a better religion. Do what thou whilst as the basic creed basically - which, incidentally, is what the church of satan preaches :)
One of the nice things about science is that its members keep their religion and their scientific work separate. It's particularly noticeable when you look through the history of science. There's a long tradition of secularism that has benefited the religious and the non-religious alike.
Issac Newton, for example, had very unorthodox opinions about God and the Trinity. To become the Lucasian Professor of Mathematics at Cambridge, he needed a get a special exemption from King Charles II, as traditionally the chair had required that you be an ordained Anglican priest. It's that very same exemption that Newton got for his unusual religious views that allowed Stephan Hawking to hold the chair as an atheist.