Cats / Scent saturating

[Answerprancer]

I've noticed that my present cat (and previous cats) will choose to sleep in one spot for a few days/weeks, then suddenly chop and change and find somewhere else for no apparent reason.
I've heard this is to do with the fact that the area becomes 'saturated' with their own scent and in nature if this happened, it would be easier for a larger predator or another territorial cat to lie in wait for them when they went off hunting.

Any thoughts?

[regulo]

This usually happens when you've bought a nice expensive cat-bed, the little terrors refuse point blank to use it for weeks, then use it incessantly for a month or so, then never set paw in it ever again. Ungrateful little slime balls!!