Is it to give him information? The problem here is that God already knows everything about you that could be known.
Is it because he tells us to talk with him and tell him about our cares and concerns? This is headed in the right direction! But even here, we may be tempted to let God know how we think things should work out.
The best reason to talk with God is because he wants us to! He desires our friendship, it is what you and I are created for – to bring honor to his name in all that we do. Ephesians 2:10
So, if we talk with God to let him know about our problems and to encourage him to answer us as we would like, you and I will become frustrated and discouraged.
But if we talk to him because we are delighted and privileged to have such an honor, if we talk with him because our concern is to not make things better for us but to have wisdom to honor him daily, then talking with God becomes becomes something that we cannot do without!
May the words of my mouth
and the meditation of my heart
be pleasing to you,
O Lord, my rock and my redeemer.