Unlike Vitamin C (Ascorbate), Humans Make Their Own Sufficient CoQ10 Until Age 20:

In the same way we need to always take vitamin C in order to prevent death, we also need to start taking CoQ10 after the age of 20 to prevent death.

In a picture, why CoQ10 is so important to preserving cardiovascular integrity.

Without CoQ10, as provided by the UBIAD1 protein, we incur constant free radical damage to our arteries and heart cells.  It is not as important to ingest reduced Ubiquinol as to replenish the level of Ubiquinone lost to age related decrease in synthesis.

The weird English language

When you say "ascent," you don't pronounce the silent c.  When you say "descend," you don't say "dee-skend."  When you say ascorbate, you transcend normal rules of speaking English and say "a-skorbate."  Sure, whatever.  If I say "asorbate," people know that I am referring to ascorbate, the same way that Americans understand a Brit when he says "toe-mah-toe." Miniscule irrelevant trifle.  Of course I mean the anion of vitamin C, ever linkable to a cationic 2+ mineral.  Duh!