I mourn the change to Sunday trading, but not for reason of faith.
People who now have to work on Sunday have been robbed of a day with their families.

In the end, the onus of proof lies with those who believe that there is someone/something out there which we can only accept if we "have faith"

You can't have proof Jim.
Sorry but none is available either way.

There is no "onus" on us.
I would like you to have what we have, but it is your choice and I do not really care if you choose not to.

Those of us who believe have our reasons.
We are happy to share, but it is usually so personal it would not help anyone else.

If it was obvious that there is a God, we would not need to have faith, and free will would be reduced.