Agree that in the past, lot of hacking attempts happened (the big retail store credit card, credtit rating hacked etc) but these problems would still exist even if we do blockchain
Well I haven't heard of blockchains being hacked yet, so I wouldn't say that for certain.
Either way, the blockchain is a new way of doing things. It has proven to be effective at promoting decentralization and transparency, and is lauded for that very same potential. It's poised to be the "next big thing", and people are starting to realize it. Companies are going crazy over it because there is no clear cut leader yet. The one which ends up at the front of the pack will earn a significant fortune for sure.
You don't have to use it right now, because it's simply an alternative at the moment, but it may be revolutionized to run most of everything in the future. You never really know.