Again, I can only speak from my personal prospective.
I believe that Jesus life was the biggest sacrifice if we're talking along those lines. And it's a message, a telegram.
I believe GOD did let mankind off, with NO conditions, that Salvation is freely granted to all.
But we're not all that bright on the whole. GOD is still trying to find ways for us to get the message.
Aslan is not a Tame Lion