I don't know about most Kali users but I'm personally not a big fan of using the mouse and clicking stuff. I used to browse through the tools neatly classified in a neat tree structure under the /pentest folder. You had your passive recon tools, your web tools, your dns tools and so on. Arguably they're still classified in that neat menu but will all due respect... it's unusable in some situations. I have to dpkg -L {packagename} to see where I can find its confs. And that's only if I'm lucky and KNOW (or guess) the package name.
Or to give you only the most recent example... I went clickety-click to check out various tools and "hmm.. what does this tool do ?"
There's a huge dump of stuff in /usr/share ;(
