Your quote,

" The potential to perform so called "heroic" deeds exists within all of us which essentially relegates it to the mundane."

I disagree that it can be relegated to the mundane,
when only a percentage act on the ability
to perform " heroic deeds".

Sadly, the measure of this attribute changes with time.

What was once considered common sense and helping ones fellow
human beings (and animals), is often considered heroic if measured against
the indifference and fear of involvement that many have.