I've been using an 11" 2011 Air as my main computer for school for many years now. I'm a middle school Robotics teacher, and tote my laptop between home and Schoo, to meetings, to robotics competitions, etc. I loved the small, light little 11" Air but given that it was 8 years old and only had 2GB of RAM, it was time for something new. I'd been using a 2016 12" MacBook (got it at Best Buy as an open box for $700) at home as my personal laptop, and I decided to give it a go as my new school laptop. It has been working out beautifully! The single port isn't really an issue to me at all; at my desk at school, I have a USB-C breakout hub with all my stuff plugged into it. When I get to school, I set the MacBook down, plug in the single port of the hub, and boom, everything on my desk is plugged in. I have the same thing at home. I have a couple of USB-A & USB-C flash drives for when I need to share stuff with other teachers, so the single USB-C port hasn't been any kind of issue at all. The performance is much better than my old Air (granted, it was getting very old), and being able to throw it in my bag and notice it even less than the Air was a godsend. I actually ended up getting a 2017 12" MacBook on sale for $800 to replace it at home, although I do toggle between it and a 2015 11" Air that I got off eBay for $400.
I'm a bit bummed to see the product go, but at the end of the day, it's a product. They come and go. I've always had a soft spot for small laptops; a 12" PowerBook got me all through college, and that machine was in turn replaced by the aforementioned 2011 11" Air. I'm sure something will come along in the future that gets my "OMG That's a small Mac I need this in my life!" juices flowing again.