I'm actually going to agree with TCK here (which is how you know JC works miracles).
The OP is ridiculously reductionist. But
even if, even if, Christianity only produced a slave morality... we
*ARE* all slaves. Did you ever think of that?
We are all slaves to suffering, death, and sin (I know it is an old fashioned word-- but who will look at the state of the world and humanity and
*dare* to deny that sin exists?).
Maybe it's not so bad to have a morality that reminds
*everyone,* from princes to paupers, that they are weak in the scheme of the universe.
And maybe it's not a bad thing to have a Savior who willingly embraces this weakness. Maybe, in order for God to be just, in order for Him to be able to judge over us without being a hypocrite (ie. for there to be hard standards of right and wrong) He would
*have* to suffer as we have.
And
*maybe* all those Christian martyrs who went willingly to horrific deaths rather than deny their faith, including the early apostles who claimed to have witness the resurrected Jesus, knew something about what makes life important. (I mean, how many people are literally willing to march to a cross and be crucified for the sake of the "new atheism" or "the Secret" or some other philosophy?)
And
*maybe* there is something more than mere "slave morality" that has lead to things like this: