No good for driving, working with machinery, or looking after people or money. It's a waste of time, really. Life is so short anyway, why spend days in a dazed and useless state?
I'm not against Hashish per se, but I don't want some dopey driver mowing me down on the crossing because he was transfixed by the pretty red lights.
If you get high, then stay safe and dream on, watch the flowers and listen to the meaningful word in Leonard Cohen or whomever, and away from powerful things and sharp objects!