Used to be like that. Have a dell laptop at work, it works well for what I use it for there.
I own a Mac (Several, actually) for personal use. However, it's got Windows and Linux on it. There's things I need windows for, but don't care to pack around a 2nd computer. Windows in a virtual machine does the trick.
Powerbook 140: 16MHz 68LC040, 4MB RAM, 80MB HD, 640x400 black/white display
Performa 475: 33Mhz 68040, 24MB RAM, 120MB HD, VGA display
iMac RevB: 333MHz G3, 96MB RAM, 320GB HD's... it's my server:
http://wildcat.homeunix.net
iBook G3: 733MHz G3, 128MB RAM, 40GB HD
iBook G4: 933MHz G4, 512MB RAM, 80GB HD (Best computer i've owned)
Macbook: 2x2.0GHz Intel 80486, 2GB RAM, 80GB HD.