Before humans landed on the moon we knew it was technically possible. The team behind the Apollo 11 mission, however, didn't know that they would succeed until it actually happened. It was such an achievement that there are still people who don't believe that we pulled it off! A result of the moon landing was worldwide inspiration based around human endeavor, scientific accomplishment, and profound existential wonder.
What the BitShares team are working toward, although in a completely different arena, is every bit as ambitious. It is feasible that the future rewards in terms of philanthropic benefit will be a giant leap forward for mankind.
I wholeheartedly agree with the OP - everyone who's made a positive contribution may well have shaped the future into a better destination for all.
If I had to choose between BitShares and Justin Bieber, I would choose BitShares.