Whyt is it impossible to modify post text after 24 hours?

I don't understand how this platform, which is very centered around blogging isn't allowing you to change your post message? This is so important in blogging, and we often have to make modifications as the item goes from an event to store, or when there is a wrong store link, or we add a new item or info… I really don't understand how even with a pro account, we only have 24 hours to make changes?