A centralized database of fungible and useful assets is going to eventually be hacked. Just ask OKTA about that.
Whereas there is no central point of hack for a well designed and tested blockchain. Distributed custody in an adversarial environment with mutual trust and dis-trust.
Yes it's not everything, but tradfi solutions are not 150% bulletproof either - they may only seem that way to the outside, but there are massive hazards lying just under the surface waiting to blow up. See: GME settlement risk end of Jan 2020.
EDIT: I used to be a huge skeptic of Eth and smart contracts. But I knew basically nothing about how they actually worked in practice. I learned a lot more and now I am a big believer.
The reality is you just likely do not know enough. Your skepticism of the space prevents you from learning and seeing the value that's sitting right in front of your eyes. You also have baked in presumptions that existing systems are somehow... workable or great, when they are not.