The change of technology always has two sides. For example, the invention of the steam engine was questioned by many people at that time!
The same is true for blockchains. When people feel the power of blockchains, they will understand that this change is so great!
The blockchain technology that accompanies bitcoin is considered as one of the technologies that can bring progress to humans, because its application is very efficient and effective. Blockchain is a technology that is implemented in a decentralized manner so that it cannot be hacked and manipulated for crime.