Thermal issues, they're not designed for 100% CPU usage for long periods. They may throttle and not catch fire, but they're also noisy at 100% CPU because they have a laptop cooling system. Please don't tell me about the redesigned cooling system on the new iMac Pro unless it's been proven to remain silent while, for example, building Qt from source.

Lack of storage. For my use case at least, which involves a lot of VMs and large source trees. Please don't suggest external storage boxes.

Shit video card for taking gaming breaks ;) Or the monitor is too big for the video card, I'm not sure. Please don't suggest a separate gaming PC, considering how much Macs cost they'd better play games well.

Exactly the reasons I have a hackintosh at home:

1. It has a form factor that suits my needs for space and cooling

2. It has a 1080Ti which I can use for ML or Games (though primarily games)

Though I have to say - your use case is a bit extreme. If you need excellent cooling, lots of internal storage space and ultra smooth gameplay then maybe a mac is not what you need?

I'm a (sort of independent) software developer, and a Mac enables me to do software on the 3 major desktop platforms and both major mobile platforms on the same machine. It's a no brainer really. I can make it run on whatever the customer wants.

And Apple used to have a system that fit the bill pretty well - the pre trashcan Mac Pro. If the promised expandable Mac Pro comes out and they don't make it unusable for one dumb reason or another, I may abandon hackintoshes.

Seems like you're making a lot of assumptions about programmers who write native code.

Not at all, I'm describing my use case.

And to add another example, a friend of mine is working on a 5K iMac (non pro) on a normal-ish desktop application. He has to use external storage for testing, because the application has to manage large document libraries that don't fit on his internal SSD. Also, he's always mentioning that the iMac gets noisy when he's doing a build.

5K iMacs and the iNac Pro are amazing for their price. You can’t build anything to drive 5K to such a nice monitor otherwise.

And their fans/heat management is great for 99% of developers.

Many of us like our screens and computers to be separate, and like having expandability in the latter.