For you are free, yet you are God's slaves, so don't use your freedom as an excuse to do evil.
1 Peter 2:16
We all were sent into this world to do good. Since God didn't want us to feel forced to do it, he gave us the power of free will. With this power of free will, we are to do what God wants us to do. We didn't come here to be like Christians, we came here to be like Christ. So, even if you don't see any "Christians" doing what God would really want us to do ( love God with all your mind , all your strength and all your soul and also to love your neighbour like you love yourself) , you should not doubt whether or not to love.
So since we are free, and the world being a cage of temptations, there is infinite possibility for us to fall and never get up again. We wouldn't want to get up, and there lies the catch. With that, it's easy to forget God and you would use your freedom as an excuse to do evil. It's okay to fall, because you are human, but the honor lies when you get back up again and hold your stance....refuse to fall again. There lies your bond to God. There lies your faith.