It didn't even occur to me that someone who uses a computer all day long would use a touchpad, even though millions of people own one, Apple continues making them bigger, and the only thing "wrong" with them is that _I_ can't figure out how to click things on the first (or 5th) try.
Apple’s touch pads (at least the recent ones) have none of these problems and are as smooth, responsive and reliable as good smartphones. They are actually useable as a main input device, not only in a pinch.
Like your comment's parent, I used the trackpad because I prefer doing everything from the keyboard and so prefer the trackpaid for things that require a mouse-like interface.
Remind yourself that it works exactly like the screen of an iPhone or iPad, that’s when it clicked for me.
I could probably get used to them if I had any reason to, but I have no idea where I would even put my laptop to use it comfortably with an external monitor. I like my mouse and I have no problems with it, so no sense in buying an external touchpad.
If I did a lot of work like scrubbing through audio/video or something that benefited from multitouch gestures like pinch-to-zoom, then maybe I'd consider it.