[paulpan]

It's largely (if not entirely) due to the cost-to-performance ratio.

Apple's cheapest Mac configuration, the Mac Mini, starts at $799 for a measly i3 4-core processor and 8GB of RAM with no dedicated GPU. For the same price, I can put together something of at least 2X the performance: i5 6-core, 16GB RAM, and an RX 570/580 GPU.

Granted for Hackintoshes you're on your own for debugging but as others below have said and on r/hackintosh, the end product is oftentimes very stable. So tradeoff can be worth it, especially as you go up the product stack.