It is ridiculously easy to create simple GUI apps with it, its limitations force you to write straightforward code (otherwise it becomes too much of a hassle and you go to another language) and provides a very good debugging environment which allow you to inspect and modify a program as it is running in a graphical way.

It is basically an extremely simple scripting language attached to a GUI designer (literally, originally VB was supposed to allow different languages to be used with it, but the feature was dropped).

Also it is instant fast on modern hardware.

Most people who have a grudge against VB1-6 have it either because they have no idea what they were talking about and are just parroting others (to be honest, i did that at the past), or were exposed to it via a project that abused it in ways that it wasn't meant to be (ab)used.

A while ago i made this little sprite editor in VB5:

http://runtimelegend.com/tools/mseditor/

It isn't anything special but it is actually quite useful if you're making low-res pixelart 2D games and personally i had fun making it (the first version also took me only a weekend although i added a few features since then).

Having said that, i do not expect Microsoft to bring back VB6 nor release the source code since now they seem to focus away from the desktop and VB6 is a full 1005 desktop technology.