Again, what is it that ETH provides society that's new and useful?
If you want to throw up your hands and declare this all a waste of time, feel free. You'll have lots of company, and for good reason, but setting some arbitrarily high goal such as "providing something new and useful to society" just makes it sound like you've got an axe to grind.
There's plenty of things about Ethereum (and blockchain exchanges and how they are used and hyped) to criticize legitimately, but this doesn't seem to be one of them.
Ethereum forces a global authority :)
Not only do those who designed the cryptocoin plus early adapters (the former are the latter, but not necessarily vice versa) get more rich with thin air generated by electricity, they also get more powerful. No wonder these things rise up like mushrooms from the ground.
Man, if I were into this, I'd just convince people 24/7 to get into these cryptocoins. Best way to get rich doing virtually nothing but some marketing. Right?