Hi guys!

I send BTC, EUR, USD, ... to a gateway and get tokens wEUR, wUSD, wBTC ...
I have full controll of the tokens in a decentralised network, so everything is safe (the only weak point is myself --> password, trojans, virus, ...)
Sounds good so far.

But what if the original EUR, USD, BTC get stolen? What if the gateway gets hacked, or goes broke? My tokens are still here, wonderfull. But they aren't backed 1:1 anymore, they are worthless. I can't change my wBTC to BTC anymore.

So whats the advantage over a normal exchange like poloniex??? I don't get it, where is my mistake?