I do, however, see a few atheists here, who struggle with others' right to have their own belief system.
I've not seen one atheist here who has said a theist does not have a right to believe whatever they want to believe.
Perry is here evangelizing and telling atheists what they should believe. We are asking for evidence that supports Perry's claims and would persuade us to change our minds. He's offered none (ever). Doing this cannot be rightly interpreted as "the need to be 'right' " on our part, but more accurately a simple request for evidence.
In essence, Perry insists ad nauseum that because he believes, so must everyone else. That is the definition of 'needing to be right'.
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"Well of course there is no way that a person can know such things unless they have been there, seen and tested everything to a conclusion which of course never happens. The testimony of one person cannot spawn testimony in another. Ignorant faith based on brainwashing doesn’t cut it!" -Dougla A. Wallace, author (ex-Mormon)