I’m sure there is lots to see in the US. I’ve travelled to the US many times and I’ve only seen a small part of it.
But my point wasn’t that it was necessary to leave the US to have an enjoyable vacation. I would just expect there would be some level of curiosity. 30 minutes away from Bellingham there is a whole other country, with different money, different laws, different culture (kinda). The idea of not seeing it because getting a passport would involve too many forms is just weird to me.
I love Canada. There’s tons to see here. I’ve lived here my whole life, except for a short stint in Australia, and I still have one province and three territories that I haven’t visited. But I still leave it sometimes - not because I have to, but just to see what’s going on in a different part of the world. It’s the lack of curiosity which boggles my mind.