Just been to the Range

[DMeek]

A few thousand reps a month over 2 years.

So a hundred a month or less should be fine then?

[oafpatroll]

Because i was told that dry firing is fine but more than a just a few people, some in the industry for years other not, but the majority seem to be stacked in the "dry firing is fine" column....

Snap caps are useful for more than just dry fire practice where they reduce wear but also for reloading and stoppage clearance drills where you can rack the slide with the cap as a buffer. They aren't expensive so why not use them?

[Fire-stick]

What is defined as "excessive"? I'm not trying to be funny. I am genuinely looking for your input as i have been told that dry firing my Glock is fine but that has never been qualified with a limit so to speak.

Ones own discretion is best, it is after all your own tool which you need to rely on or use (or abuse) as you see fit.
Every action has an equal or opposite reaction...

As per Glock:
Can I dry fire my GLOCK pistol?

"It’s ok to dry fire your GLOCK pistol, but we recommend using a snap cap or dummy round if you will be dry firing for a long period of time".

If you search around on different googlu-fu forums then you will come across an episode of 3 where the breach face either cracked or blew a hole from the striker pin hitting constantly within.
No mention of what spring and whether it was standard Glock factory or red or whether it was aftermarket.
Dry firing count wasn't given but excessive came up.

"Excessive" is also like the term "how big is a ball of string".
The physical ball size of 3 balls can be exactly the same size or diameter but 3 different thicknesses of the thread or strand thickness will give 3 different lengths of actual content.

Occasional or moderate dry fire is a different term to excessive.

Prevention is better than cure after all, snap caps or different dry fire aids are there for a reason.
Most don't break the bank.