Proud to be Welsh/British?

[Dorcus]

I can never understand the logic of being proud of being any nationality.
However, I fully understand that people can be proud of the values of a country they were born in or live in.

I absolutely agree. Nationality is ephemeral anyway; it's only a method of organising the administration of a collective and that can change shape many times over millennia. I think people can start becoming proud when they contribute to the important questions of human experience like solving hatred, poverty, disease, climate change and violence etc et al.