The biggest win is that now I can use a single dongle for power, displayport to my monitor, and connection to a USB hub. So if I take my laptop home or into a meeting room, when I get back to my desk it's just a single thing to plug in now instead of 3+ separate cables. And since this stuff is all standardized now and there's no longer anything Apple proprietary like Thunderbolt 1, I would guess other makers will follow suit eventually and most monitors will support it directly without even needing a dongle.
Plus the MagSafe port was not without problems - every few months I would get like a little magnetic pebble or something stuck in there, and then it's plugged in but not charging charging and usually I'd realize when my laptop is almost dead and then have to find something small to try to pluck it out of there. The USB-C port doesn't have this issue and it's still a relatively small port with very low resistance to being pulled out. Tripping over the power cord just has never really been an issue for me, it kinda seems overblown (knock on wood though, I guess).
I do miss the external LED that showed whether you were connected to power or not and whether it was fully charged, it would be nice if they found a way to add that back on the side of the laptop or something since it can no longer be on the cable itself with a standard USB-C cable.