Plenty of kids appear to have committed suicide due to such experiences. This is a very literal example of "survivorship bias" :-)
How many survived with zero food?
I can agree that "complete lack of love" is rather hard to define, but are you sure that it's just a coincidence, when an abused, humiliated, tortured person commits suicide?
I'm thinking of Harlow's monkey studies in particular - there's some evidence that (macaque) infants will choose comfort over food. Certainly food is more directly tied to life, but Maslow's structure carries a lot less weight if people will seek higher tiers even when they lack the basic elements of survival.
There seems to be something about that field that leaps at the chance to use the shady, discredited pieces of the other social sciences.