Curious about the Nexus program. What have you found the benefits to be?
You can bypass human run immigration when entering Canada or entering the US. Instead of waiting in a long line at the airport and talking to a human - you go to a computer instead, have your irises scanned and answer two questions. If driving and everyone in the car has a Nexus pass, you can take advantage of the Nexus line at the border (again, way less waiting). Occassionally (random) you are flagged to speak with a human - but it's very few and far between.
They have also started opening up Nexus security lines the airport. This means that in some cases you can also take advantage of shorter security lines.
I love my Nexus pass. There is nothing I like better than getting off a long flight and not having to speak with a human to explain where I was and what I was doing - or wait in line to get into the country.
For you, the benefits would be: less speaking to humans = lower chance someone is going to ask "why are you spending so much time in Canada".