Doing nothing is not a human plan, Mr. Outside. 
Lead, follow, or get out of the way. 
Defeatism in the face of fascism, nuclear arms, and now global warming is not new--- but I prefer to have hope and do something than to sit in my easy chair on the Titanic and drink another highball. Again, if you'd do any cursory study, you'd know there is plenty to do. Defeat may be inevitable no matter what mankind does, but if one does nothing, that "may" disappears along with mankind.