Yes, and I'd kill someone without said circumstances... However, I have not lost all of my reason, and I generally don't find it worth it.. Also, I lack the physical capabilities, and would have to do it with a weapon. But, I normally just curse, and wish that they catch cancer in their 20's, and leave it at that.
For some reason, I have a very strong sense of will.. I wanted a snowstorm one day, and a couple hours in, it started snowing. This has happened more than once, and I accidentally attracted the attention of a week long ice storm. Ice. Not snow.