Re: Enabling Transient Mark Mode by default

[Richard Stallman]

    One important reason against it is, that it makes uses of the mark ring
    other than marking text very unpleasant.  The manual starts section 12.6
    with the example of using the mark to mark interesting spots in an
    buffer so that one can easily jump between them (in many cases this is
    faster than saving positions in registers and therefor very
    convenient).  In such cases the highlighting of text between point and
    the last mark is distracting and useless.

You seem to be talking about the case when the mark is active.
But that's an unusual case, and it's easy to turn off,
so why so concerned about it?