Summary: The psalmist wants God to bless the psalmist's people, that the world might see those blessings and praise God.
Response: I mean, yeah? But we are blessed for much more than showing God's glory as an end in itself. God's blessings are meant to be shared, from time and money to skills and relationships. It's hard, but worth it to get past "bless me" to "bless through me."