To be honest, I was using WASD until the very last moment, bu then I realized that it's uncomfortable to use both hands on the same side of the keyboard. Using arrow keys didn't seem to work because my computer counts "ctrl + arrow key" as a standard shortcut. So, I just used what I found the most comfortable for now (IJKL), but I agree that I need to think of better controls.
Thank you for sharing the opinion, I will incorporate your suggestion into my game ;)