Throughout the scriptures there is a close relationship between God's being creator, and our praise of him.
A great example is Isaiah 42:5, 8.
Why does God seek, indeed, require, our praise, to the excusion of idols?
Is it because he is needy, lacking in affirmation, has an ego problem?
No, nah, nada!
He does it because it is good for US!
connects us to the one praised, and there is nothing better than being
connected to our creator, lover and redeemer. He says so himself!
It connects us to who we are (made in his image: his image-bearers, Gen 1:27),
and is encouraging, gives us pleasure; its part of worship, and worship
expressed rightly (in prayer, song, acts of service, Roms 12:1) it is moving, profoundly exciting, and allows a step,
for just a moment, a tiny step, into heaven!
similar vein, the praise of your spouse deepens the connection between the
two. Praise of your pre-spouse friend is good, but not as good, because
you are not yet 'one-flesh' (Gen 2:24),
praise in a 'one-flesh' state encourages both deeply, builds up both
and grows both: it is a form of giving of self: to spouse, and how much
better, to our creator God?
Lack of praise, or mis-directed praise damages the relationship, cuts us off from the source of our being (God, and in this life, spouse if we have one). Lack of praise is selfish.