FYI, any Buddhist who believes in karma and reincarnation is practicing a faith based on a supernatural entity rewarding them for good behaviour.<quoted text>
Still stuck trying to convince yourself of this straw man fallacy. No one is buying it.
Just like theism, there are a number of different philosophies under the category of atheism.
There is of course Buddhism, which is a non-deity based philosophy.
And as for your claim of treating people with dignity; I have yet to see you do that.