@Delano and @Pioneer1, you are not opposite, but are looking at it from a self-centered perspective. Let's consider the broader community:
We have people who do not believe in adverse impact of man-made climate change causing the planet to become increasingly in hospitable to human life. We also have people who believe it but are uninterested in doing anything about it.
For the sake of future generations, it is important they we change the way these people think and ultimately behave. Thats is just one example what the skill of getting someone to change their way of thinking is important to humanity.
How to get someone to change what they believe is actually well understood. Marketers take advantage of this knowledge, for profit, every single day. From a marketer's perspective and benefit or harm to their mark is unimportant.
Too bad we don't leverage this knowledge to better serve the world.