It's a pretty lofty goal to visit every country on earth and I'll salute anyone who can accomplish that.

But I'll place myself in the group that doesn't think it's logical/ideal goal for me. As others have similarly mentioned, I only have so much time & money and want to visit different parts of Canada, the US, and other other countries I've visited as well as some new ones that interest me. However, I wouldn't mind visiting places that aren't on my list and/or would be currently considered "undesirable" if it wasn't necessarily on my dime.

I also think the stadium/rink/ballpark tour idea is really neat.