I’ve always felt the certain void (ok, since I moved from QBasic to VB and C++) of a programming language that made graphics design through logical programming an effortless and immediately visible task.
No mucking around with various libraries, no spending 90% of the time on resolution and other stuff.
Just basic, built-in functionality that allowed to treat drawing and animation elements as part of the original language design.
Processing is obviously a good attempt at this.