I sleep on a very low, almost flat pillow. It's polar fleece and barely raises my head above the mattress. I don't think pillows come much lower than this one.
It's always been my preference. When it comes to pillows, I guess you could say I'm a minimalist. Whenever I'm at a hotel or somewhere with regular height pillows, I struggle to sleep and usually decide I'm better off with no pillow at all. I find the regular height pillows strain my neck.
My wife can't believe I'm able to sleep on my pillow, as hers is much higher. Funnily enough, I feel the same way about her pillow. When it comes to pillows, we're on opposite ends of the spectrum.
What's your pillow preference for sleeping? Low, medium, high or other?