Constant Change

This is a bit of a paradoxical statement but I've heard several people utter these words and lately they've been making me think . . . a lot. "The only things constant are change and change." Now, if by chance this is true, why are people so put off by the changes that arise in the nature of our loved ones or life in general. I chose to apply this statement to relationships (i.e. friendships, romance, sibling relations, parent/child relations, etc.). Often times, we get annoyed, put off, offended, and are ready to throw in the towel when the people that we are closest to make a change in lifestyle or they have a slight personality shift. If we really love these people we roll with the punches but deep down are still asking ourselves the question, "Why the sudden change?" All the while, not realizing that as ironic as it may sound they are, in fact, showing or displaying an "off-type" of consistency. They're being inconsistently consistent. I'm a camilion and can change with any environment and have caught flack for my ability to be so versatile, if you will. But what I want to know is why the response is negative when change comes? Isn't change the only constant?