I am a proud atheist, and that's well known in my family (who mostly share my views).
And yet, as I get older and think about these things, if I have any say in any funeral I may have I would request that the music would include 'Gwhahoddiad' and 'Cwm Rhondda'. Not for their religious content but for their Welsh content.
I don't agree with the religious content, but this was what I was brought up with, it's intermixed in a way. Proud to be Welsh despite the religious heritage, but accepting the memories of singing Welsh hymns on desolate rain and windswept hillsides at funerals as a child. Family members (I realised later) and others who'd died too early (the 'dust').
There is a poignant dignity - and I dare anyone to challenge it - about standing with your head uncovered in the rain.