Learning to fly IS fun. Every instant of it. Of course the fun is sometimes hidden, behind clouds of anxiety or stress or your instructor's bad mood. Instructors are humans, too, remember? But even if you don't realise the fun right at the moment, it is there, to be enjoyed later.
Learning to fly IS fun. That is only normal, given the exorbitant cost.
As for using cheapo flight simulation software: I had used so much of it that I did my first flying on the instruments solely, to the despair of my poor first instructor. He ended up putting a sheet of paper (carefully prepared!) before the instruments and having me fly several circuits without a single instrument visible - that was NOT fun at the actual moment! Only later did I realise how much I had learned that day - and how much fun it really had been.