We do pretty well until someone says "it doesn't matter to me"

When what should have been said is "for my purposes, the difference is so small as to be inconsequential" (to paraphrase Todd-Zakia)

For every argument that "it doesn't matter" I am pleased to find an exceptional case where "it does matter"... and the key here for all us is to remain open. Think for yourself.. Does it matter to you?