I know and agree. Just because Bitcoin was invented 2009 and we are entering 2018...
We're still in the beginner stages of this. We'll know what's going to be the end result in about 5 more years from now.
Consider Facebook was only "invented" 2004... Less than 14 years ago. We must give the same timeline for Bitcoin, which means "everyone will have heard of Bitcoin in 2023 -- 14 years after its invention).
We're only entering 2018... still early. :)