Apologies if this question is not entirely fitting for this Exchange, but I didn't know where else to ask. 

I am currently working through my Masters, and while talking with one of my professors the question "Would you be interested in continuing with a PhD" came up. I have thought about this frequently over the last few months, but I can't seem to come to a proper answer. I believe the problem here lies in the fact that with a Bachelor or Masters you kind of know what you're getting into and what will be expected of you, while for a PhD it is kinda hard to find information (at least for me / in my country).

I have already gained some industry experience before coming back to University, and thus I know for certain that I would not like spending my life doing boring, repetitive office tasks; I plan on taking on as many extra-curricular activities during my Masters that can expose me to the 'department life', or at least give me a glimpse of what working in Academia is like.

However, despite all this, I keep coming back to the original question and not knowing what to think: Would a PhD hold my interest for however long it takes me to complete it? Would I enjoy working in Academia afterwards? What should I expect from a PhD in my field? Would I get one just to (possibly) be hired by a top-tier company doing cutting-edge/research work?

I don't know if I'm conveying my thought clearly here, but what I am trying to say is that there is virtually no information on what is expected of a PhD student, what Academia life is like and all this kind of stuff. How does one know if doing research would be a good fit for him/her if there's no prior exposure to this kind of work? Would I be good at teaching in case I decide to stay in Academia? How do I assess this? 

I feel like there must be a way to clear my thoughts and get some answers *before* I decide to enroll in a multi-year PhD program and possibly waste years of my life leading up to nothing, having to fall back to an everyday industry job with less experience than someone of my age. 

Again, I realise how general and convoluted this post is, and I won't mind deleting it if it is deemed unfit for this Exchange, but I'm honestly at a loss on where to go next and would like to hear opinions coming from people that are/have been in the field.

Thanks in advance for taking the time to read all of this!

As pointed out in guest's answer, I'm specifying that my field is STEM (Bachelors in CS, Masters in Data Science). You can read more details and my reply to his answer in the comment section, which might give a little bit of insight into what I initially wrote here.