I guess wasps are on something much more than caffeine then, with their tendency to sting you for no apparent reason lol.
I am pretty sure some Monkeys eat certain plants that have drug like effects(Article from a long time ago-my memory may be incorrect though), so it seems it is not just humans who succumb to addiction/substance use.
I find that quite interesting.
Also the 100 Million years. I do wonder why some animals survived whatever happened many, many years ago that got rid of the dinosaurs. It could simply be survival of the fittest, and they did not fit into this.