I believe what made people become Bitcoin "investors" should not be as important. What should be of the greatest importance is to learn how Bitcoin works, the way it is designed, and why it makes more sense than the "fastest, most scalable altcoin in the world".
The OP is an example of a person who does not understand Bitcoin yet. If he did he would never dare say "Ethereum will surpass Bitcoin" as the no.1 coin by end of 2018.
Many people have a very common thought habit of assuming that a first-mover will forever be the #1, regardless of every other influencing factors.
Ethereum usage and adoption already exceeded usage and adoption of Bitcoin.
If we have a time machine to travel back to the past 5 years and someone from 5 years ago said Ethereum will surpass Bitcoin in adoption and usage, you could probably be in disbelief too.
People like to say if it is not Bitcoin, then it is altcoin, much the same way as saying if this computer is not from IBM, then it is an altcomputer.
Yes, I agree that is a very silly statement.
Exactly the same way I feel whenever someone describe non-Bitcoin cryptos as altcoins.
Yeah, you may continue with your thought process that Bitcoin will forever be #1 no matter what the f*** happens to the world.
Whatever makes you feel comfy.