People who calculate a lot are usually the ones who don't make it big in the comic/manga industry, Sad but it's true.
The question of "why would the reader would care?" isn't easy to know, cause different types of people will read through it, mostly children but adults as well.
So no matter how cool you think your comic is, if majority(and not just majority but just majority of people who pick up your book or read it online which you really "won't know who") doesn't see it good then it'll never be considered good.
Adults are the ones who read the book before it's published, So they might base it on how AnimeRebel says, but in my opinion just do it on what you want other than thinking too much of advices from other people, and saying "this is how you should do your story"
If they're editor publishers, however. then you can't do anything but to obey.
As for you being afraid to show your story, you shouldn't. TBH if some editor guy stole my story then I'll be proud knowing they published my story and other people are reading it and "not just stuck in my mind forever!"
You shouldn't be afraid of us here who might steal your story cause those who steal are mostly editors which you'll be showing your story if you're applying for a job, life is a gamble but if you're afraid to step on the streets to buy some milk cause you're afraid to be run over by cars-- well... you get my point.