Professors
* don't have time for feedback
* have no interest in their PhD students' work
* are known to steal results (and put their names on it)
* are ideologically/religiously driven and judge you and everybody else accordingly
* don't open their network to their PhD students
* jump from one hot/trendy topic to the next and burn their PhD students on it
* blame others/circumstances for anything bad
Faculty
* members pride themselves for devoting their lives to the cause
* members do long work days, have little sleep
* has little budget it spends on its PhD students
* feels toxic (Sayre's Law: "Academic politics is the most vicious and bitter form of politics, because the stakes are so low.")
PhD students
* do overtime
* rarely/never publish
* publish in irrelevant magazines
* publish with their names on the nth position (after doing all the work)
* don't or rarely attend conferences
* don't or rarely work on what they signed up for
* take long to finish (or don't finish at all)
* blame others/circumstances for their bad situation
Talk to PhD students, ask on the net, listen to speeches and lectures the professors gave.
A lot of advice given at HN about whether to join a startup applies to academia as well. Unnecessary work, little pay, vague promises, inconsistent management, insider circles. I wonder what academia's equivalent of stock options is. Aiming for tenureship perhaps?
I believe the problem is that you cannot well concentrate on either, constant switching of completely different mental tasks will be very taxing.
Also, when you're "in the flow" in one area it's difficult to suddenly switch to the other. So it's hard to manage that time split.
Or do you mean, just don't do research on your own?
I cannot really recommend it, mainly because of the workload. However there are things to be learnt both from academia and from the private sector. Moreover, being a PhD student won't make you earn any real money any time soon, nor give you any valuable work experience, IMO.
> You can work on whatever you want with no pressure.
Nor being a PhD candidate, nor being a freelancer guarantee that you can work on whatever you want with no pressure. And doing both at the same time will only make things harder to manage your time and actually do it "with no pressure".
I hated it at the time, but my lying, psychopathic "project advisor" where I got my Bachelor's in Physics did me a big favor by helping me realize the last thing I wanted was people like him in control of my life.
Related - "Don't Do For Money What Others Do For Love" - https://news.ycombinator.com/item?id=16792942
At the moment no matter how much you protest there's a stream of chumps happy to take your spot. We need to start examining the ROI of academia the way we would for anything else demanding such a huge chunk of your life and sanity.