Atheists do not "urge people to believe that there is no God." We simply say that we, as individuals, do not believe in the existence of any god. You, of course, may believe whatever you wish. I don't care, and I don't attempt to change your beliefs. At least, I don't care what you, or anyone else, believes until they begin to impose their beliefs on society.

No atheist will ever come to your door and try to persuade you to "convert" to atheism, nor condemn you if you do not, nor condemn an atheist who changes their mind and "finds faith." Unfortunately, the same is not true for adherents of certain religions.