As i'm not a day trader or a trader at all but more a holder I'll more use decentralize app in the future then !
In that way I'm sure I'm not trading on scammy plateforme.
I also read an article (could not find it again) about downtime of exchange in major drop of Bitcoin like they can't afford people to take their money back, but it's only speculation I don't want to fuel the complots theories.

I think we as user should from now start to educate more people about these important issues and also they will lead to an higher decentralization what blockchain is all about