You tried plenty of options before settling in. I think that the hardest part was seeing your child going through the difficulty of adapting to a place he did not like. Parents do everything for their child and I bet it wasn't easy to witness that.
New Zealand....that is a far away land to test out. It looks fabulous on the map but perhaps the reality of what is it like to live there is different than what we can watch on Youtube.
I agree with the lack of sun in nordic countries , it did not affect me that much but I have to be honest and say that coming back to my country where the lack of sun is not a reality made me appreciate it even more.
What do you like about Spain and how is education there better for your child?
RE: Should you leave your country?