My contacts are -1.75 with -0.75x148 astigmatism and I can't make out peoples faces unless I'm practically standing next to them. Nevermind trying to read a menu board at a restaurant counter or trying to find my glasses if I misplace them. Driving would be totally out of the question for me.
I wear glasses with similar lens as yours. I only realized I had myopia after starting to go to university, and I only realized I had astigmatism around 2 years later. I guess the brain learns to correct the image, at the expense of some headache if you depend too much on it.