Everyone should obviously do things as they individually see fit. But, in my experience, publishing something without someone else doing at least copyediting/proofreading tends to lead to a lot of errors and is certainly not something I would advise in general. All I know is that I find it hard to even publish a blog post without typos if someone else doesn't edit it--and sometimes even then.

(The good news is that it's not really expensive to pay someone to do if you don't really need the services of a full-blown editor who is advising on structure, flow, etc.)