Partially because I let my passport expire, partially because I wanted to keep my dollars in Canada.
I did the route towards there thru canada and back thru the US. I find the way thru Canada was boring. Lots of straight roads.
OP, did u went alone again? It seems like u got good weather there. We didn't, it was a mix.
Next time I want to do it alone, do lots of exploring. There is alot to see if u take your time.