Letters that were hoped to never be read

Harry wrote a bunch of letters when they were on the run and even when the war ended he continued to write letters after he got to know someone new. Now Hermione's found out and they have to read them. But Harry didn't write theese letters so they so could be read. He wrote them so they knew. Anyone who deied after HP left P.D in TDH is not dead nor are Dumbledore and Sirius.ONHOLD