We tend to anthropomorphize them. Or perhaps Life-omorphize them.
They are not the product of self-replicating chemicals. Unless specifically designed to do so, they will not be concerned with their own survival or personal welfare. Even if they are conscious, they will have no organic instincts, whatsoever, unless we give them that.
They will also not be concerned with *our* survival.They will be perfectly benign as long as they can't *do* anything. The moment we put them in large robot bodies, however, we had better be very, very careful, and if we can add emotion to their cognitive repertoire, they had better love and respect us above all else.
The problem, of course, is that someone, somewhere, will eventually build one of these things without those safeguards. Something malevolent. The machine isn't the problem. The people will be.
Once they're built, we'd better use them to get some humans off planet ASAP or that, as they say, will be that.