Seeing all the bullshit and deciding to be cynical and do nothing is intellectually lazy and defeatist, which is the sort of short-sighted and lack of awareness a teenager would do instead of a more prudent adult.
That depends on how much time/energy/money/health/resources an adult has. Generally if Ike can spare some resource towards the collective effort into making the world a better place to live, the adult thing would be to contribute some resource. If one cannot, then focus on oneself until one is stable enough to begin contributing back. Part of the difficulty behind this is that it’s easy to become cynical and dismissive because its easier to say the world can’t be saved/isn’t worth saving than actually saving the world.