There are numerous good reasons not to throw anything out - especially when it's digital and doesn't take up any physical space. Six years ago I read, and of course saved a link to, an article about punctuation in the digital age (and particularly exclamation marks). Finding it again was relatively easy. And it gave some historical perspective:

Telegrams, for instance, were likely to be terse, if only for financial reasons. Thus, one day Victor Hugo sent a telegram to his publisher. He wanted to know how his new book was doing. His telegram read: "?"; the publisher's reply: "!".

The exclamation mark, you see, meant Hugo's book was doing well. The publisher could have deployed sentences of Proustian length to explain the novel's success among the target demographic of 18- to 35-year-old Parisians, but he saved a few centimes by cutting to the chase.