The good that it does is that you receive a regular dividend. That is the safety of dividend stocks.
When the market drops(all stocks drop) The hope is that the divvy stock drops less, as it's yield rises with a descending price and that brings in buyers.
The big drop of PSEC had to do with the new offering they made. But, that money will be put to work making more money, a future plus..
That was followed by a big insider purchase. My opinion is that this is a good investment.