Everybody has to find their own path I guess. Also 99.99% of people don't care about improving the world and the world gets by just fine on its own. Or does it (global warming, war, etc.)? Who knows, who cares.
You ever watch that South Park episode where they make fun of Hollywood where all the actors love the smell of their own farts? These days I feel that this is a pretty apt of a criticism of SV and Bay Area culture..
Whose definition of "better" are we required to use? I strongly suspect yours, mine, and the person building front ends for Google AdWords will be different definitions.
Hundreds of thousands of people use the product I helped build at my current workplace and I don't feel a thing. Yet having even a 100 daily users show up at the website I used to run felt exhilarating.