'Discern' in the Bible

Your servant thought: May the word of my lord the king bring relief, for my lord the king is able to discern the good and the bad like the Angel of God. May the Lord your God be with you.”

I’m now 80 years old. Can I discern what is pleasant and what is not? Can your servant taste what he eats or drinks? Can I still hear the voice of male and female singers? Why should your servant be an added burden to my lord the king?