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?

in my opinion bitcoin will never be defeated by ethereum, because bitcoin is the first pioneer and many people prefer to use bitcoin as a transaction, so even though ethereum has a smart contrat system, but still people will use bitcoin to make transactions and besides that there are still many people who still believe to investing in bitcoin rather than ethereum, so I'm sure if bitcoin will continue to be the king of all cryptocurrency and no one can beat bitcoin (including ethereum).