Bought my first Macs in 2011. 13, 15, and 17 followed by a TBD: Really happy with them. 6750M in the 15 runs a treat for the games I play under Bootcamp; 13 turns a right trick when I'm focussing on my music (DJing and production) and the 17 is my desktop replacement - my daily - and burns through a few VMs running simultaneously. But requirements change and tech gets long in the tooth. A couple of the reasons I paid the premium for the MBPs was the symbiotic relationship between the hardware and software (that OS X is built specifically for the hardware, versus Windows built for heterogenous hardware) and as a result perceived greater longevity of the hardware I purchased (a belief that a good number of iterations of the OS would support this particular generation, whereas subsequent versions of Windows and its applications seemingly require the next generation of hardware to run at peak efficiency (loathe to say 'performance' seeing as later hardware would all but guarantee such, regardless of platform). SO. How long do you think these might be supported? Have a fantastic community here. Seen that there's a thread even dedicated to bringing ML to unsupported Macs, though I consider this an allegory to the Hackintosh. That said, I think switching to ML we had machines as old as 4 or 6 years being capable listed as compatible? Yes, we can't see the future and tomorrow it may be that only Haswell and future x64 hardware platforms - or ARM - will support 10.9.x or later versions of MacOS. But, as a best guess or through personal experience, what do you think? What's the longest you've ever seen a Mac supported for?