Your reason is nice and no matter who is behind a project if it makes people to lose money is not advisable to invest in. I have been a fan of Ethereum but when I find out that have money in one of the Ethereum wallet online providers and they system was hack I have to change my mind.
Yes we need a secured wallet. There are many people complaining with that kind of problem and there are also many people hack without knowing the reasons. But with that, we don't need to change our minds in this kind of issues instead, we continue to support ethereum because theres a lot of people investing ethereum.