Yes it is a pox on mankind. (cancer is a better analogy)
Humans like answers to questions, so in the absence of good data tend to make stuff up to fit. The plausible (at the time) explainations end up being FACT until proven otherwise. These days we have huge and improving amounts of good data and so most of those old stories and myths have been debunked because we have better data.
Giant bones sticking out of the hillside or found in the ground are no longer evidence of giants or dragons.
The vast oceans are no longer evidence of a global flood, nor are seashells on the top of mountains.
Disease or mental illness is no longer atrributed to demons or sin.
Religion was born out of a need for answers and exploited over the ages by those who saw the power and control available over those seeking those answers and to maintain the status quo, those who had the knowledge and the chanel and those who had to pay to use it.
Religion is now redundant. Good works and charity can be done by anyone, faith is not needed.