I was just complaining in another thread that you have to have so many wallets, each with its own key, password, file, each to be airgapped, each to never ever be lost or that's it forever. It's going to be awesome when cold storage technology gets up to speed. Put it on your stick and rest easy, one seed for everything if you lose it. I don't generally use any of the altcoin software wallets except sia, and I read all about it first. That's not to say it can't be compromised in the future but nothing's perfect.