Certifications exist to keep HR happy and provide another stream of revenue for the companies giving the certification. They test you on a lot of material you will never use. Also, by the time you get the certification, they are out of date. Of course, you can also say the same thing about most technical education, particularly now. It is better to prove you actually can do the job (somehow) rather than pass the certification. I am an example. About 15 years ago, I was out of work, so I became a Novell Enterprise Certified Netware Engineer (I passed 13 tests), and I could not even get an interview. At the time, I had 20 years experience doing systems and applications programming on the mainframe. IT has changed a lot over the years and not necessarily for the better, which probably one of the reasons why it is tough to get people even interested in STEM or IT.