I can imagine how you felt when you remembered that God loves you. We do know that he loves us, but in the middle of this hectic life, with all the burdens, the changes and the high speed of life, we forget...
But isn't is amazing how we feel loved for the first time in our lives ever, just when we notice that God loves us? It feels like we just found out, wihch makes us happier than we would have been if we hadn't forgotten his love on the way.
I think that this is the whole point, we're sinners, incomplete, we forget, so that when we remember, we feel reborn and blessed, and if we hadn't forgotten, we would have taken his love and forgiveness for granted.
God bless you.