More than 25 percent of bonds are yielding less than zero percent. That means when the bonds mature, owners will receive less than they paid for them. This is a scary scenario for any bond investor as security of principal and low-risk returns are the main reasons to hold bonds.
Everyone should own bonds or bond-like investments, though you might ask why would anyone want to own bonds at this time? The value in owning bonds is not just for the known rate of income but also to provide a less-volatile rate of return and to provide stability to a portfolio. Providing stability and helping us deal with our instinctual desire to make the wrong moves at the wrong times may have the most value for investors.