Life is entirely perspective, choice, and the interaction of the two. Nothing is impossible until you decide it is, and then you can always change your mind. Why push yourself away from someone because you make different choices, and have different perspectives? Emotions are scalar; the smallest of differences have caused the largest of rifts. Forgiveness and understanding are easier to give when you can understand other points of view. There has never been a sin unforgivable, just someone unforgiving. So the delineations made in life are entirely in our minds. Specific groups are made by choice, either those perceiving the group from within or without. Interactions are as unforgiving as the people who make them.