I write my own songs and cover many Traditional songs. I find that I have to write 10 to come up with 1 good one. There are many great songs in the world and if no one plays them they go away.
Too many folks don't display good judgement with original material. Even legendary song writers write weak material. I once heard a performer, I forget who, say, "I wrote this next one , I don't write all that many songs. The world has enough great songs and plenty of bad ones too, I don't need to add any more bad ones." Words to live by.