I've flown them a few times recently in J long haul and some short trips in J as well as one in Y and have no issue with them, my reasoning is that if it's going to happen, it will, regardless of the airline. They can't be blamed for the Ukrainian incident imo, that was just bad luck.
The German Wings, and the Silk Air type accidents are much more of a worry. Technical failure can happen to any aircraft, deliberate pilot action is a whole different thing.
Hopefully the truth will come out as to what really happened MH370.
I was wary of flying Air Asia given some of there issues here of recent, had some flights recently and I'd happily fly them again, also Laos Airlines, they lost a plane into the Mekong a while back, but I'm still happy to fly them.
But then again, I flew CAAC (china airlines always crash) quite a few times in the eighties, so maybe I'm a fatalist or perhaps I have a death wish!
(said very much tongue in cheek)