I'd actually trust a centralized exchange more than that. At least if you register on some popular, regulated exchange you know that you're sending your coins to some licensed company. Sure, it can go bankrupt or/and hacked, but at least you know it isn't your fault. There is no way to know with certainty you made some mistake here during wallet creation. The software is closed-source; the developers can rip you off, blame it to you, and you could have nothing to say in your defense.