everything you said would be really great if we lived in a perfect world, but lets be honest, we don't. The creation of a federal world government as you say would never work for one reason in particular, and that is everyone is different. all the different counties have different religions, different society's and different laws, and to think for example Iran is just going to drop what there doing and join the US with this "world Government" IS LUDACRIS. so in other words, their will never be a united government which means there will always be wars.
Electronic cigarettes are still fairly new and there hasn't been a lot of studies on the long term effects of smoking it, so saying that " it has no damage on humens" is untrue because we simply do not know. And its not just the smoker you have to worry about, its also the effects of the second hand smoke that also is very under studied.
