Why was asbestos commonly used prior to understanding its health risks?

Asbestos was commonly used in various industries prior to the understanding of its health risks primarily due to its exceptional fire resistance properties. This characteristic made asbestos a highly valued material for insulation and fireproofing in buildings, construction materials, and various industrial applications. The ability of asbestos to withstand high temperatures without degrading or igniting was particularly appealing in an era where fire safety was becoming increasingly important.

The other factors, while influential in its use, are not the primary reason for its widespread adoption. For instance, while its low cost, soundproofing qualities, and availability of raw materials contributed to its popularity, the critical factor was the need for reliable fire protection. The significant health risks associated with asbestos exposure, which became more widely understood and documented over time, led to a decline in its usage and strict regulations governing its use in many countries.