I Am The First To Express My Apologies

Why am I able to stand firm and cemented?
And how can I agonize through pain to do it?
I am not a product of innuendos invented.
And my experiences are more,
Than I've revealed to mention.

And when I am challenged by someone,
I have never met with steadfast and fixed policies...
I am the first to express my apologies.
Since I know they have no clue,
As to 'what' and 'who' has had me already tested.