I’m still runnin a 2012 (non retina) without any issues, and I plan on keeping it until it literally won’t boot. What’s funny is I was initially annoyed as I got it a few weeks before they announced they were releasing the first Retina display models (discontinuing the non retinas), however getting the last non-retina generation was a blessing because that’s was that was when they also began making upgrading MacBooks nearly impossible (non upgradable ram/and I believe some weird half SSD/half disc drive that didn’t come in >512GB or something like that). So getting the last (upgradable) MacBook Pro was the better deal because two or so years ago I upgraded the RAM to 32GB and because it was also the last MacBook to have a CD drive (that I never used) I was able to rip it out, put a $5 hardrive bracket in it’s place and threw the original (I think) 750GB or whatever HDD where the CD drive used to go, and popped in a nice 1TB SSD into the main disc drive, and nowadays it’s almost always plugged into a monitor so I wouldn’t really even be using the retina anyway.

Sadly though, I think I got the last generation of great MacBooks, and as much as I love it I fear for the day it finally dies, because I’m probably not getting another MacBook unless something changes, and there still isn’t a laptop out there that comes close to the good MacBooks (I know good one’s exist and I’ll manage, but they’re still not the same)

I'm exactly in the same boat as you, I love my 2012 non retina Macbook Pro. Upgraded the RAM a few years ago, changed the HDD for an SSD, and it still works fine. I didn't like the newer MBP keyboard or touchbar, maybe now they're getting better. But the price is what will push me away. I'll probably try to find a nice model on which I can make sure Linux run fine.

Hey mine was non retina too!

It really was a fantastic piece of hardware, and probably the only Mac I’ll ever live. The dual SSDs(I replaced the cd drive too) gave it a few more years for me.

I’m pretty happy with the replacement I got though. It’s and MSI gaming laptop, but without the “gamer” look. It’ll handle anything I throw at it, so now I can take VR in the go.

Still gonna miss that MacBook though

I snagged an official Apple refurb 2015 MBP (last decent keyboard) just a few months ago. They’re still out there.

I am also holding on to mine, and it is my primary machine even though we have newer MacBooks in the house.

I've a 2012 MacBook Pro as well, and Chrome is unusably slow on it (OS X). Safari runs okay. Mine has 4 GiB of ram, and a spinning disk. The combination means it's hitting swap constantly, and hitting swap thrashes the disk on top of it. When I get the money to upgrade the ram to 16 GiB and upgrade to an SSD I'm hopeful it's be more usable, but for now it runs a terminal well enough.

I have a mid 2012, I upgraded the ram to 10GB 4 years ago and replaced both the hdd and the cd reader by 2 ssd.

This things flies for most tasks, I only see it slow down when I try compiling Android apps.