Why some people want the Ethereum to over come Bitcoin in the near future? Is it because they make profit from ETH or what?
You must understand, that the demand or price growth of a crypto is not determined by what people want, because it is based on what the product itself offers. ETH offers advantages in speed and is cheaper in cost, this is more value that eth has in order to displace bitcoin.
You can make profit from bitcoin, i don't think we need to displace bitcoin because no one can replace bitcoin because at the first place bitcoin in the king of crypto currency, second ethereum and bitcoin has its own differents. It's up to you when you should want to invest your money. Those coin has a good potential for the future .