so how you explain let's say the state nuclear weapons in face of survival? if we know M.A.D. still more or less applies, why purchase more nukes if you cannot use them anyways?

And how does valuing good food (as in expensive with not so much real nutritional value...) or steamy sex contribute to survival? How can my love for low budget travelling be explained scientifically (besides me and my fellow lonely-planet trippers have some sort of disorder that makes us cruise planet manically, sleep a little, sleep on dock of ferries and in crummy hostels, blister around feet running around metropoles...)?

many things in life are irrational. Each morning i thank Gods for those.