True, Jack. But anaglyphs have the advantage that they can be viewed at any size (and you can always wear the glasses over your regular glasses). Cross-eyed pictures have to be quite small, so you can bring the two pictures completely over each other.
Here is a large scenic view, for example (from my house, the other day):
http://www.guypadfield.com/3D/garden25may.jpg
It's only for fun, though I did have a serious intention when I made the pictures - to illustrate the maths of 3D and the physics of colour to my students.
Guy