The reason for not adding "click E to show whole text" was laziness. Same goes for music.
About proceeding without succeeding, will take that note - thanks.
I will work on improving such simple things as music and basic features (like pressing E to show whole text) in my next games. Although I'm competent only on coding. Art, music and gamedesign is not my niche, so I will have to work on that.
It's really bad that I'm not that kind of a person who would polish absolutely everything before releasing something. The urge to show everyone what I've done so far is stronger, but I will work on that too. Hoping that with each game I'll learn something new and one by one games will become better.