I totally agree, it may be the best for now but we'll never know in the future. With the current advancement and people who loves to explore on things, I guess they might be able to create another technology way better than blockchain.
i agree on your point . we are now in the future and the people today are now more smarter than compare to the people on the past and this means that they will always be curios to explore and invent new things or new technologies that will be better than the previous/current inventions we have so far . but if we will be foccusing on today situations , i think blockchain isnt really the perfect solution but it can be a good solution for creating a new posibilities .