I've got a 2012 MBP which doesn't have much in the specs department, so it never gets used. I use my early 2015 MBP from work for my work and personal stuff, I check MacRumours regularly praying that Apple will have come to their senses and make a proper MBP again.
When I leave this job I'll have the choice between using my 2012 MBP or buying a 2015 model off of eBay, it's a sad state of affairs, and every power user that uses a Mac laptop is in the same boat.
The other thing is that they really haven't provided a compelling reason to upgrade. Sure, I would like a faster CPU with more cores. But what I really need is more RAM and they don't offer that. My 2013 MacBook Pro has 16GB, just like the 2018 MacBook Pro. I would love to buy a model just like this with more RAM and an integrated LTE modem. A faster CPU would be gravy. I would even be willing to put up with no longer having a real escape key.
When I leave this job I'll have the choice between using my 2012 MBP or buying a 2015 model off of eBay, it's a sad state of affairs, and every power user that uses a Mac laptop is in the same boat.