Why fight over the limited resources on Earth when we could expand our resources by going to other planets ?
Let's think big guys
TO THE MOON!!!!
Had to say it
but yeah having a usefulness to the coin and what it can do is good, If you were going to make a cause coin like that, it might be better to merge mine it with bitcoin, maybe even have proof of stake as well so that it can help out it's price a bit better. XPM is all well and good but people wanna make money too which is why it's not as popular than the more financially geared coins.