Ahh, well, you should probably do a bit of fact checking before making such sweeping statements. This is posted from my Dell 8400 running Leopard 10.5.2 (that's right - the absolute latest & great form Apple). It runs like a dream, NEVER crashes, and is as fast as lightning. Minor hacking in software to get it running, but it is AWESOME (and sitting proudly next to my Mac Pro)...
Hey... that’s pretty good
But most people can’t do that Hackentosh hacking
Your Dell 8400 is obviously an “Apple quality” computer and would run Leopard just fine without any hacks. Except that Apple has purposely crippled its OS so it runs only on a computer you buy from Apple