I want a 17" too. I loved mine. However, I understand that not enough folks out there purchased it to justify continuing the line-up. Apple does go were the money is. Not enough of us to keep that model afloat means it has to go. People want thinner and lighter, and at least very good battery life with great performance. It comes at a cost for all that in a beautiful portable. USB-C is currently the smallest and fastest interface. So, even mini-D/ thunderbolt 1/2 goes in favor of this. I will also miss my magsafe power connector. But, it makes sense to remove it in place of being able to charge the laptop from any port on the laptop.
My current 2015 doesn't have an ethernet jack. And I do need that fairly often. So, Thunderbolt to ethernet dongle, and I'm in business. We can even go 10Gb, an not be limited by the old NIC port at 1Gb. But, I'm sure someone is still complaining there is no 56k modem built-in anymore.