> What specifically did you love about VB6?

I taught my daughter to program using VB6 -- long after it was already obsolete. It's very easy to get started and build a GUI application with very little ceremony. You can develop your entire UI without a single line of code and run it. Only then did you need to double-click on components and start adding functionality with code.

But actually using it for "real" development was not as enjoyable and I did it for years. If you only wanted to make a static fix-sized application then it's ideal. But if you wanted your application to adjust to the size of the window (and therefore the resolution of a monitor) you had to wire all that up yourself. Painting controls to specific pixel sizes is an obsolete concept.

> What do you find frustrating about modern .NET, C#, and Visual Studio that VB6 didn't make you fight?

C# is superior language to VB6 and WinForms is a superior way to do an equivalent style of UI development. While the VB6 designer was a smoother experience than the Visual Studio designer it was a much more limiting experience.

But if were to put my nostalgia glasses on, I think what is frustrating about .NET GUI development that never seemed frustrating in VB6 was just the ease of getting it do what you want. At the core, WPF/XAML/whatever is a better way to do a GUI layout -- Instead of pixels you place things in stacks, grids, and panels. You have margins and padding. But styling your GUI is so much more complicated and it descends into this overly complex impossible to understand system that makes HTML and CSS look good. This was not a problem in VB6. The GUI interaction with code is also more complicated with magic static property incantations that would never exist in VB6.