Why do insurance companies mainly invest in the bond markets?

Question

Why do insurance companies mainly invest in the bond markets?

Answer 1

safer than stocks, no risk.  The bonds can be tax free.

Answer 2

because that is safer and give a positive return..

Answer 3

Because bonds typically have a predictable stream of payments of interest and repayment of principal, many people and companies invest in them to receive interest income or to preserve and to accumulate capital.