Thus, the early missionaries of Buddhism to America purposely stripped Buddhism of any elements that might appear superstitious, mythological, even mystical. Dharmapala, Suzuki, and Vivekananda clearly ascertained that Americans measured truth in science, and science posed little theological threat to a Buddhist and Hindu worldview. After all, Buddhism had unique advantages for someone who rejected their faith (Christian) due to its authoritarianism and unscientific outlook:
1) Buddhism did not assert or depend upon the existence of a God
2) Buddhism was a superstition-free moral ideal; it conformed to the scientific view of an ordered universe ruled by law (Dharma)—a system both moral and physical where everything seemed to work itself out inexorably over vast periods of time without divine intervention (karma)
3) Buddhism posited no belief in gods who could alter the workings of this natural law
4) Buddhism was a religion of self-help with all depending on the individual working out his/her own salvation
5) "Original" Buddhism was seen as the "Protestantism of Asia," and Buddha as another Luther who swept away the superstitions and rituals of an older, corrupted form and took religion back to its pure and simple origins
6) Buddhism presented an attractive personal founder who led life of great self-sacrifice; parallels were drawn between Jesus and Buddha as the inspiration of a personal figure exerted strong appeal to seekers who had given up on theology and metaphysics.
Thus, Buddhism was packaged and presented in its most favorable light viz a viz the current spiritual crisis in the West; and, not surprisingly, Buddhism seemed immensely reasonable and appealing to Americans. Darwinism might be undermining Biblical Christianity, but it only enhanced Buddhism's standing.
http://online.sfsu.edu/~rone/Buddhis...ismScience.htm