but the history proves that so far centralized storage has been safer than self storage, on average. No it doesn't. History proves the polar opposite; MtGox al

but the history proves that so far centralized storage has been safer than self storage, on average. No it doesn't. History proves the polar opposite; MtGox alone ate more coins (>750k) than all known incidents of wallet theft together. Best practice is to use your own wallet. Has always been this way, will likely stay this way for a long time to come.