Even if there really is more to life than X, that does not imply that X is not a useful part of life. (I guess I take issue with both the saying in general and this particular application of it.)
To me his actions are those of a "difficult" person. Very hard for a more relaxed (dare I say "normal") person to understand and rationalize. So I wouldn't bother. As others say, maybe that's part of what makes him different and special.