I remember remarking to an Elder about 25 years or more ago, that at any one meeting 25% of the potential attendees were missing, not always the same people, but the same percentage.
He replied " Yes, that is because the Meetings are SO boring".
They were, in the main, even back then, now they must be so bad that if I sat through one, my brain would melt and run out of my ears.
They must be finding it well nigh impossible in the affluent World at least, to make a convert from the Public. If people are not engaged by something, they move on to something they do find interesting.