Microsleeps are amazingly weird. you are there and then you are .. somewhere else, and what happened inbetween is unclear. (for some value of 'there' and 'somewhere else')

Anasthaesia, you at least know you're going out to lunch. Microsleeps, its random. And very dangerous (driving)

The hallucinations were quite a jolt too. I've had the drug induced ones, these were qualitatively different.

I don't recommend it. Sleep is good. Stick to a good sleep regime, and if you have problems sleeping seek help (note: waking up in the night and getting back to sleep is fine. waking up and not being able to get back to sleep, or not being able to get to sleep in the first place, is not fine)