Mixed religion

When the husband and wife has different religion what happens is the confusion of the children. But one family where the wife is a Catholic and the husband is a Muslim, they said that full cooperation will solve the religious differences. It is like giving respect to the other religion so there will be no competition.

But what about the children’s preferences in their religion? It is up to the kids to choose their religion. That is a good democratic way of solving the religious war. Why not make it a universal motto?