We are shallow because we have become enslaved by gross materialism, the glitter of gold and its equivalents, for which reason we think that only the material goods of this earth can satisfy us and we must therefore grab as much as can while we are able.
We are shallow because we are 'mayabang,' ego driven, and do not have the humility to understand that we are only human, much too human to mistake knowledge for wisdom.
We are shallow because our media are so horribly shallow. Every morning, I peruse the papers, and there is so little to read in them. It is the same with radio - all that noise, that artifice.