I learnt plenty in my CS courses. I just don’t use most of them, and most of the skills I do use I didn’t learn there. That does not mean it was a waste of time

I learnt plenty in my CS courses. I just don’t use most of them, and most of the skills I do use I didn’t learn there. That does not mean it was a waste of time - knowing the theory behind various data structures, algorithms, and circuitry make programming more satisfying for me.