As someone whose previous life culture (before being born again) was heavily steeped in Buddhism as well as a myriad of other pagan systems, I can say that buddhism is very nice on the surface.
For a Christians, Buddhism can look nice on the outside, but we do have to look deeper and see the spiritual implications. There is a way that seems right to a man, but its end is death right? Buddhism exemplifies this exact issue. This isn't a matter of not throwing the baby out with the bath water. The central core tenants of Buddhism are incompatible with Christianity. For that matter, any belief system that contradicts any part of God's absolute truth found in the bible is incompatible.
That being said, is Buddhism valid for the world? Sure. However, the world is in darkness and lost, so what's right for the world will eventually lead to the 2nd death.