> What is honesty to someone who has no basis for Truth?
A far better question is:
What is honesty -- and goodness -- to someone who uses superstition, mythology and dogma as a basis for truth? (or "Truth", as you laughably put it.)
We actually do know the answer to that question. It includes murdering "witches", arresting researchers, burning them at the stake, crusades against unbelievers, sacrificing virgins, drilling holes in the heads of living persons as offerings to the "gods", flying aircraft into densely inhabited buildings, blood libel, inquisitions, and so forth.
And doing all of the above, and more, with honest, good intent.
Examples of atheists committing atrocities because people would not comply with the atheist position are few and far between. The critical point here is that theists do these things in the name of religion.
It isn't just that they "are" religious and these things happen; they happen because of religion. Theists often counter these historical facts by pointing to the old Soviet Union, noting that the leadership was declared atheist, and state (quite accurately) that said leadership was murderous in the extreme. But it wasn't collective atheism that drove those actions, it was political ideology, paranoia, and megalomania. Atheism is a lack of belief in a god or gods; it contains no drive to "deal" with those who do believe, because there is no atheist agenda.
Contrast this with such gems as:
"Thou shalt save alive nothing that breathest. But thou shalt utterly destroy them..." (OT / Deuteronomy 20)
"But those mine enemies, which would not that I should reign over them, bring hither, and slay them before me." (NT / Luke 19:27)
"Those who believe fight in the way of Allah, and those who disbelieve fight in the way of the Satan. Fight therefore against the friends of the Satan..." (Koran / 4.77)
Also, Hindu tradition commends the ideal of the warrior who is prepared to fight in the defense of dharma.
These things are the rule - not the exception. The major exception to dogmatic, pre-programmed violence in religion, it should be noted, is Buddhism.
Consequently, there is every reason to view religions in general with great caution. It has been made very evident by repeated incidents in history, both recent and distant, that religion is in fact extremely dangerous.
Presently, here in the US, we find the daily life very much affected by theists pushing their beliefs (stores must stay closed on Sundays, certain words are censored, reliability in a court is predicated upon swearing on a bible, marriage must comply with multiple religious preconceptions; our money, our national pledge of national allegiance, and even our nation's motto bear nonsensical religious proclamations; significant property and financial advantages are provided to religions that are not available to the common citizen trying to support a family...)
Additionally, deadly outcome religion-driven incidents continue to pop up from time to time in the form of clinic bombings, "exorcisms", deaths from being intentionally kept from proper medication.
All the while, religious hate groups like those led by Fred Phelps keep the pot simmering; ridiculous, brittle stupidity like "creationism" is put forward with the intent of inserting it in the public educational system as if it actually had legitimate scientific standing, when it is, in fact, a compendium of abject nonsense suitable only for propagandizing those who don't understand what the scientific method actually is.
Personally, I really don't care what you believe as long as you maintain a libertarian-like respect for the rights of others and the non-religious role of government; but when repressive laws, physical threats, and terrorist disasters are part of the general signature of the belief systems you proffer, you cannot expect me to take the view "oh well, live and let live, eh?"
So I am, at the very least, wary of these superstitions and the people who state they believe them. And yes, of course: I would be equally wary of atheist folk who might put forth such an agenda, for any reason.