Blockchains of course can make the world better. Doesn't matter when it will be. Anyway it will come.
Peoples want something independent from usual system. The problem is that this is the new direction and the most of the people thimk that blockchain will decide all problems from nowadays system.But no. Now the blockchain directions is pretty new and we are only teaching a little bit every day.
Also think, that soon the transactions will cost more than now