Hello i am dewalski ,
I think that our biggest problem will be energy consumption and demographic explosion, that can cause other problems. I want to show you an interesting interpretation of population overgrowth and resources :) 
Also recent economic crisis in 2008 was primarily caused by deregulation in the financial industry. If you want more detailed analystics and opinon about future i will make detailed post about it.
So follow me i will upload it as soon as possible
also please check my latest post you will like it : https://steemit.com/colorchallenge/@dewalski/can-you-guess-what-plant-is-on-the-picture-to-win-money-colorchallenge-thursday-green
i upvote my comment to make it more visible for everyone