I'm using Kali in a VM for ethical hacking. (I'm still learning)
If you're not an ethical hacker or security specialist, it's not necessary to use this OS. You'll get better with an other Debian or Ubuntu distribution. For example, I'm using Fedora 25 KDE (Red Hat dist.) on my main machine. If you are not only in the terminal, this distribution is much easier to use. If you are working on the desktop mainly, so I recommend to compare the various desktop versions (KDE, Gnome, xfce, etc.) to find the best for you.
You don't have to work with kali just because they have a nice logo or someone told you: hey, get a look at kali