Why can we not delete the pre installed apps on an iDevice?

All of the pre-loaded apps I have no use for and never intend on using. (Such as Stocks, Safari, Weather, Contacts, Clock, Game Center)So why is there no ability to delete them? I’m aware you can put them in a folder and hide them that way, but I’d like the option to completely remove them. And I’m also aware of the “wiggle” mode to delete apps you downloaded yourself. For a temporary solution, I’ve put all the apps mentioned in a folder labeled “junk.”

An app I cannot put in a folder is Newsstand. I’ve been trying to figure out a way to hide this app but so far, no luck. I don’t like my homescreen on my iDevice to be cluttered and I’d like to be able to delete apps I have no use for.

Also, I’ve previously jailbroken my device before but ended up not liking it and I know there’s an app for deleting pre loaded apps in jailbroken mode but I prefer not to jailbreak again.

If anyone has any suggestions, please share. Thanks!