[phyrrus9]

No, I just like to leave the environments organized that way. But in the case of web server and db server, it's because they are console only.

Most servers are, but just because they're console doesn't mean they need to be separate virtual machines. I use separate servers for mine partly because I use a mix of T-SQL and MySQL, and the databases I have store local govt information, so it's a requirement that they not be connected to the internet.

Your separation makes more sense than mine kkkkk.
But i separate server beacause i never use the same VM for server and for development. To server i use hardering and more restrictive security rules.
To development i need less restrictive rules and use graphical interface to use programs like visual studio code, atom, sublime, mysql workbench, genmymodel, browser and other visual tools.
For development i need more flexibility and for server i need the maximum security as possible.
Sometimes I separate to avoid version compatibility errors. For example, sailsjs give some problems with the last version of node js, but i like to use the last version of node js in Ionic 3 and angular 4.

Note: Sorry for my English, it's not my native language.

That's fair. I've almost never any need for a graphical environment. Most of the code I write I'm using Vi (yes, I know I'm old school), MySQL has a very amazing command line interface (it even does text formatted tables for you!), and all of the compiler lines are command line anyways.

I do see a good point in separating out for version compatibilities though. I don't use Node (or any JS framework for that matter), because I think those things are terrible languages to begin with, and my views on anyone who tries to write desktop software using a web scripting language are very low. But whatever works for you works man.