Business is about:
A) You do something for people.
B) You take some money from the services you have provided.

So you have to put both people and yourself into the account.

Sometime you must overcharge a little so you can generate enough profit for the business or organisation to grow.

Bigger organisation provides more jobs to people.
This also provides the organisation a bigger ability to do something greater for the people.

Sometime we earn money not by making someone worse off.
We can do it a smarter way, that's to improve the efficiency of the economy interaction.

By this way we raise the productivity and minimize the waste, this is where the money comes from.

To take the world economy as whole, the reason that it's always growing is that our efficiency is risen higher and higher over the time.

So unless one day we have hit the saturated point, that means everyone on the earth is trained to be so efficient and productive, the economy will still keep growing.

So that's also the reason that you should invest, because in long term, everything just grows.

And about the world again, sometime it's kinda sad to know that without hydrocarbon, everything that's around us won't exist at all.

This just means that we will have a real serious problem soon.

Where the heck can we find new energy to replace hydrocarbon?
How on earth that we can reduce our CO2 emission down to 0?

Sometime I believe that there's a mission for all of us.
That's to think more about the people, and to think of how we gonna pass these challenges.