Notice who God asks for a sacrifice:
Take now your son, your only son Isaac, whom you love… Genesis 22.2
Then Jesus, looking at him, lovedhim, and said to him, “One thing you lack: Go your way, sell whatever you have and give to the poor, and you will have treasure in heaven; and come, take up the cross, and follow Me.” Mark 10.21
For God so loved the world that He gave His only begotten Son, that whoever believes in Him should not perish but have everlasting life. John 3.16
He who did not spare His own Son, but delivered Him up for us all, how shall He not with Him also freely give us all things? Romans 8.32
To sum this up, because God truly loves us, He will not spare us from sacrifice.