mmmmmm Meth. When you absolutly, positivly, have to stay up all night and remove an engine from a car, wax the kitchen floor, and mow the lawn at 3 am (which will somehow get the law called on you (and I thought we were in a free country)
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Comparing meth and coffee is like comparing cigarettes and weed. It just feels good to have the rush meth brings. Sure the crawling spiders, thinking your roommate is an undercover cop, and crawling on your hands and knees for hours cause you just know you dropped a big rock down there doesn't sound like fun at first, but you learn to deal with it. If you think acid brings you interesting perspectives, try being strung out for a few days and then drop a couple of hits. Hee-Haw. Just being strung out and not having any sleep for 3 days will bring the delusions on in a hurry. I personally wanted to push the envelope and see how 'dinged-out' I could become and still function in society. I laughed my ass off at the television for an unkown length of time (somewhere between 30 mins and 3 hours) before I realized it was off and I was seeing the reflections off the black screen. And you thought pot made you giggly! It's all a matter of extremes I guess.
Heroin I only tried once and didn't realize until after what it was. Gotta love your practical joking friends!!! It is so difficult to describe, but I highly recommend (again) William S Burroughs books for further study. I did stare at my shoe for about 8 hours and had the best time of my life though.