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.)
(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.)