Please define these religious principles - or at least explain what you mean by the phrase.
religious principles means to serve god in all circumstances
BG 14.26: One who engages in full devotional service, unfailing in all circumstances, at once transcends the modes of material nature and thus comes to the level of Brahman.
alloyed religious principles are those where the focus of one's service attitude shifts from god to oneself
BG 17.5-6: Those who undergo severe austerities and penances not recommended in the scriptures, performing them out of pride and egoism, who are impelled by lust and attachment, who are foolish and who torture the material elements of the body as well as the Supersoul dwelling within, are to be known as demons.
BG 16.13-15: The demoniac person thinks: "So much wealth do I have today, and I will gain more according to my schemes. So much is mine now, and it will increase in the future, more and more. He is my enemy, and I have killed him, and my other enemies will also be killed. I am the lord of everything. I am the enjoyer. I am perfect, powerful and happy. I am the richest man, surrounded by aristocratic relatives. There is none so powerful and happy as I am. I shall perform sacrifices, I shall give some charity, and thus I shall rejoice." In this way, such persons are deluded by ignorance.
BG 16.16: Thus perplexed by various anxieties and bound by a network of illusions, they become too strongly attached to sense enjoyment and fall down into hell.
I'd suggest you get to know some atheists and their intentions, as opposed to presuming anyone who doesn't comply perfectly with your ideals is atheist.
the general principle behind reading scripture is to determine what are god's ideals.
The general principle behind making spiritual advancement is to accurately perceive where one's ideals are situated and determine the distance from god's
As for the religious; (unsatisfactory performance in who's eyes by the way?)
unsatisfactory according to scripture and saintly persons (the
bonafide practitioners of scripture - italics included just in case the phrase brings to mind unbonafide practioners)
They still identify themselves as theists, and I'd suggest that since they are in the majority they are far more likely to be to blame for materialism and selfishness than a few atheists.
regardless of what they identify themselves as, the point of religion is how god identifies a person
Out of the majority of people I've met and known the best behaved and most selfless identified themselves as atheist or agnostic, the more materialistic were theists.
then it seems you are either fortunate enough to have met some well adjusted atheists or unfortunate enough to have met some maladjusted theists
Your credibility and intelligence are on thin ice with such baseless statements.
there is more to religion than morality, namely transcendence. While being moral is certainly admirable, it is not sufficient to solve the problems of life (it is not through advancement of medicine that we will overcome disease, its not by leading a healthy lifestyle we will over come old age and its not through charity or other altruistic acts that we can over come death)