As a literary journal editor, I have read my fair share clichéd submissions. And I'm afraid to say, that most of the time, they make me wince.
As a writer, it is probably hard to comprehend how overwhelming these clichéd submissions actually are. You are one person, and you think, "oh, it'll be alright, surely there won't be any other subs like this." You would be surprised. You need to think, are you really going to be noticed writing about the sea breeze among an inbox full of 300-400 other subs?