@cicerone imposter,
Your own happiness of course...... Can I infer from that, that you put yourself first ?
God wants us to put Him first, then other people, then ourselves. That keeps the focus off ourselves and discourages the sinful emotions of : hatred, self-pity, and anxiety. The ones that cause so much trouble in the world.
I have just started reading in earnest the Old Testament and I am finding that the vengeance of God usually came after His people turned away from Him and started worshipping false gods, sacrificing their babies to them on altars and engaging in the nastiest debaucheries imaginable. I am not God but I can imagine that I would have been extremely grieved by this.
I too live my life for the now, like right now with you on this blog.
But what we do now is so important and tied to our time in eternity ahead.