Human beings are quite capable of achieving any thing or state they can imagine - and apply themselves to achieving. Genetic fitness is a moot point, particularly considering both the decline in the potential of the species in the last ten or twelve millenia - and the amount of physical, mental and spiritual interference and meddling applied to it from without - the 'gods'. Humanity is of course a work in progress.

     However, when it comes to peace, expect nothing from the mass that the individual chooses not to attain. Peace is simple to achieve in one's self; simply locate the 'seat' of consciousness - the place from which you view the multiverse - in the centre of your head. If you can hold this perspective you are more than half way to enlightenment.
     Stopping all thought is the major key. This, too, is easier with a centralised perspective.
     As to your choices in this alternate - if you focus your dreams the best is yet to come. It is not merely the future that is written on water, but every living moment is a new universe.
     As Siddhartha said, "attachment to desire is the root of all
suffering."