I've also converted from Trackpoint to trackpad over the years. My solution for "physical mouse buttons" on a Mac laptop involves mapping Caps Lock (left pinky) to Left Click, and Right Option (right pinky) to Right Click. With Karabiner, this is easy and works perfectly for my needs. I typically Tap to Click on the trackpad for following links and the like, but always hold down Caps Lock for click and drag (which I find very uncomfortable otherwise). If you are otherwise interested in Mac hardware, you might like it too.