Depends on your specific intention, as in why?<p>Research? - Absolutely, But pick the top universities for your subject matter (Computer Science in this case). There are even some universities that give you the option to skip a Masters and go straight into a PhD depending on your academic achievements.<p>A SWE Job? - Not necessary for some companies, but most usually throw in, or even emphasize the preference for masters grads. If it is a typical software engineering role at a FAANG company, then yes. The competition is too fierce for BSc or nano-degree holders and I wouldn't risk applying without one.<p>As you said 'MS in Computer Science' some people usually take this to enter into the field professionally from a different industry to get up to speed. At this point if I previously did a BSc in the same subject, I would specialize in a masters on where the industry is going, such as security, quantum computing or deep learning.
Your question is the equivalent of "Is purchasing a hammer something worth pursuing?" The knowledge conferred by a degree is a tool, nothing more.<p>So, the question is: what do you plan to do with your MS? Do you want to apply to jobs that require specialized CS knowledge? Are you doing it for your own personal satisfaction? Are you hoping that having a MS will make you generally more attractive on the job market? Only you know the answer to that.
From a career perspective -- probably not worth the time, effort and cost.<p>For increasing your knowledge -- YES.<p>BTW: When you say "CS" I understand that you are NOT talking about software engineering which is a very different area. Bit like conflating physics and maths with all disciplines of engineering, i.e. civil, mechanical, electrical, chemical.
If your undergrad is in computer science then be very specific and picky about your continued studies.<p>If not then compare the end state job prospects with cheaper educational options. Consider the cost of putting your life on hold for several years
I don't think it's worth it unless you are coming from a different field or looking for a way into the USA. In those cases it's worth it, otherwise you won't learn as much as working or doing PhD.