Each story has been lovingly crafted by your hand, inscribed on a blank page directly from your heart. No matter how good you think your work is, you cannot expect everyone to appreciate it equally, or even at all. You see, the reader doesn't know the amount of work you've poured into the composition. They don't see the tears you've cried, or feel the pain you've suffered. They haven't lived with the work for weeks or months or years.
Editors are even worse than casual readers.
They look at dozens of stories each day, trying to judge from a few short paragraphs whether a story is worth pursuing. They are people who have to read, whether they feel like it or not. That's how they make their living. They get up in the morning like everyone else, have good days and bad, and in the end are responsible for selecting a pitiful percentage from everything they receive. Each envelope they tear open contains the same dreams, most of which are soon to be shattered.