Assuming it is generally accepted that COVID originated in bats, then it's reasonable to look at characteristics of bats that are unique. Perhaps even find a correlation between the behavior of bats and humans.

Bats are nocturnal. Most species of bats never get sunlight. One study I found as an armchair researcher points to evidence of a vitamin D deficiency in wild bat populations: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3897589/

Here is a study done back in may about Vitamin D levels and the severity of COVID: https://www.sciencedaily.com/releases/2020/05/200512134426.htm

Now consider the changes in human behavior as we have become glued to technology.

We stay inside more, we avoid the sun at all costs. This means we all likely have lowered vitamin levels (Vitamin D and Calcifediol specifically).

To top all of this off, our response has been to stay inside even more than we used to, allow tech to dominate all areas of our lives, thus worsening the problem. Also consider the populations hardest hit, there would be vitamin D absorption problems as well. Consider senior citizens who likely stay inside even more than the rest of us. This would explain some of the death rates in nursing homes when compared to the larger senior population.

Is it possible we have basically trolled ourselves with our technology addiction and the solution to this current problem is to just go outside? It can't be that simple right?

EDIT: Here is a link I just found in another thread on Hacker News showing a correlation between the two: https://www.medrxiv.org/content/10.1101/2020.06.01.20112334v1