There is not wrong with admiring heros, and I personally feel that any entrepreneur who changes the world and helps humanity as much as Musk has in just 10 years deserves to be called a hero.

"Let's start a rocket company in effort to ensure the survivability of humanity." (something that only super-power are currently able to do)

"Let's start an electric car company (and solar panel company) in effort to reduce the dependency on fossil fuels." (since other car companies are barely trying)

Then to have the resources and perseverance to actually make these very difficult goals a reality is outstanding.

Gates is doing something similar with his Thorium reactor research. Hopefully that will be another game changer.

The Google co-founders have been doing similar projects for the past 10 years. Even if it does make them tons of money it's still admirable to give awesome software and hardware to the world at cost or free.