how difficult is illustrator to use for illustrations
Depends
If you want to create in-depth stuff then it is hard
If you want to create simple no LOD stuff then it is easy
Overall it still depends on your strategy on using the tools
f.e; I used for the division 22 one the shape builder tool a lot, since I wanted arrow triangles, so I cut out a smaller triangle in the triangles, the same goes for the hollow cube in the middle, however the combine symbol was another story as I had to use 2 cubes, 2 circles, and a high triangle to recreate it to acceptable measures.
the text was pretty much the easiest of the tasks here.
To judge the division 22 logo above by difficulty it is rather beginner-ish to novice as shape builder can get annoying if you got symbols in the wrong layer.
I also gotta note that the text tool is hella annoying if you go for the "Path-text" tool.
:grinning:
P.S its also useful for graphs but I hope that is not your primary program for that matter