Ethereum, being the world's second largest cryptocurrency by market cap, has all the potential of replacing Bitcoin in the future. It's more than just a cryptocurrency, being a platform for the development and execution of smart contracts (aka dApps). With ETH, it's possible to launch alternative cryptocurrencies without the need to start a Blockchain from scratch. It's also possible to use the ETH blockchain for other purposes such as voting, proof of identity, verification of documents, and more. In contrast, Bitcoin's only use is for finance where it cannot be implemented in other areas by its own.
Given all of the benefits Ethereum provides on top of Bitcoin, it makes me wonder whenever it'll be able to replace the pioneer cryptocurrency within the future? As long as, Ethereum keeps progressing in development and mainstream acceptance, it'll be much closer to Bitcoin every step of the way. What are your thoughts?

Your opinion is more about technology, but you do not know that this market is more about manipulating prices. Everyone knows that ETH and EOS are technologically superior coins than bitcoin. But here we are not interested in technology, it is only a very small part of the growth. In fact, the market is working on a pump and dump price so people can make money every day. Sharks will figure out how to manipulate and make the most money, while small fish like us look at the chart to predict sharks' psychology. This is a vicious circle of people, who invest in technology will often die.