We all change, TS people more so that others. People drifting away from "the community" is really not all that much different than how we tend to drift away from other people and places in our lives. In some cases, it is intentional, yet for others it is more of a gradual drift, as we get further into discovering ourselves, we may find that we have less in common with others in the community. Change is a constant in life, and as we go from one change to the next, often we are in a much different place and are much different people than when we started making these changes.