I'm only interested in my max, because then I can work out different zones and work at a percentage of my max
Knowing the average for me is a useless stat I never refer back too

I just want to know how hard I am pushing it 'today'
Its excellent for use in a time trial situation, because the goal is to push it so you almost max out and then keep it there for the entire race.

Thats how I use a heart rate monitor and so thats the only feature I really use on it