Decentralization is just THE THING TO USE , why? !
 Because of it , you have a high level security on your accounts on decentralized exchanges , how?  All your informations are not registred in any servers , place , ....
Thats the power of the blockchain and cryptocurrencies....
And the best for the end , you do not pay any taxes to your country except if the government impose taxes and laws on it , but with decentralization,  it'll be easy to skip them , of course taxes are important so at least try To pay them a bit !!