naomi - // It seems difficult for believers to comprehend that others can and do live perfectly respectable and successful lives without religion. //
Your point chimes deeply with me because the major overriding problem I have always had with Christians, is their default sense of moral superiority, to which they wrongly believe their faith entitles them.
There is the unspoken, and occasionally spoken attitude that they have something that I need, and I am therefore lacking as a person because I don't have it.
I find that level of arrogance to be suffocating, and I have bashed heads with the fervents on here over that very point for decades.
Of course, that level of smugness shields them from even the vague possibility that they may actually be wrong.
I don't mind anyone seeing anything at all differently from me - but I seriously mind their attitude that because their view is different from mine, theirs is automatically the right one, and I am to be gently pitited for not agreeing with it.