If you’re serious about your writing, doesn’t it seem like you should be working on your novel or the story-you-want-to-get-published rather than messing about with writing prompts?
Respectfully, no.
Using writing prompts has many benefits, if you’re getting good prompts and you know how to use them.
:LINKS:
Writing prompts: https://storyaday.org/category/inspiration/writing-prompts/
The 3-Day Challenge: https://storyaday.org/3dc