I do love LaTeX or to be more specific Xe(La)TeX. And it is really fun to create astonishing work sheets or tests with it.
On the other hand I also hate it! There are so many things that can go wrong and its a pain to find the culprit.
Like today e.g. I just wanted to adjust some tikZ to display pyramides but it did not work in my editor QtikZ or with XeTeX.
It finally worked with overleaf.com. But why?
I found this code once upon a time ago: