Buddhism is not a religion. It is about ending suffering. It teaches you how to end your suffering. It is common platform so every body can practice the teachings no matter what religion you are in.

While that's true, it's also a bit oversimplified. It teaches a philosophy to end suffering in ones-self and to those around you. The idea is to attain an extinction of the ego, the concept of "self", which leads to an end to suffering. But it also teaches, through lifting the illusion of "self", that compassion for all life is not just essential, but logical. When the ego is gone, one realizes that the end to suffering for your own being is no more or less important than ending suffering for all other beings. It is the conditioned ego that convinces us that our own needs are somehow more important than that of any other life, which suffers just as you do.