The second point you should know is this — suppose you do manage to die a quick, merciful death. What about your kids? Your grandkids? What kind of future will they face on their own? Foraging for food, drinking tainted water, becoming easy targets for human predators…is that really the future you would wish upon them? For that reason alone, it makes sense to become educated about nuclear events, how to prepare for them, and how to survive them.
It isn't hysteria, and GMO isn't 'evolution'. One of the biggest issues for preppers and survival is that GMO seeds will not reproduce in the same way if the seeds are saved and re-used. In fact, in many instances (maybe all?), it's illegal to save the seeds and re-use them! It's far better to track down heirloom seeds that are native to your area and/or compatible with your climate. A good place to start looking is