"Well, whuzzit matter as long as you're a nice person, right...."

A common enough approach to many, many facets of life, often to one's faith by someone who does not share it, no?
The marvelous Mia, a frequent, and extraordinarily insightful and gracious poster over at MusicaSacra informs us of a possible etymology of the word "nice":

[Middle English, foolish , from Old French, from Latin nescius , ignorant , from nescīre , to be ignorant ; see nescience .]