3rd Verse: A Question

Sometimes questions just pop into my head.

Just a brief background. If you were raised in 'old school' church, you are quite familiar with singing assigned hymns out of the hymnal during song service.  Most of these hymns come with 4 verses (often referred to as "stanzas" if you're really old school).

Yet, invariably, we were always assigned to sing Verses 1, 2, and 4.  Skip verse 3.  Pretty much every time.

Why is that?

Do Verses 3 have something in them that is existentially 'questionable'? Something in them we don't need to know? 

​Has there been a study that determined that singing Verse 3 in a hymn adds nothing to the altar call response rate?

Do we skip Verse 3 in order to save time?  How much more time would it really add to sing just one more verse?

I think the next time I feel ignored or excluded, I'm going to say "I'm feeling like a Verse 3".