Here's why:
* Consistency: The most important thing is to be consistent within your writing. If you choose to bold punctuation after bold text, do so throughout your document. If you choose not to bold it, stick to that rule.
* Style Guides: Some style guides (like APA or Chicago) may have specific recommendations for punctuating bolded text. It's a good idea to check the style guide relevant to your writing.
* Readability: The goal is to make your writing clear and easy to read. Bolding punctuation might make it stand out too much and distract from the text.
Example:
* Correct: This sentence is bold, and the punctuation is not bold.
* Correct: This sentence is bold, and the punctuation is also bold.
Ultimately, the best choice depends on the context of your writing and your personal preference.