I know for what present simple and present continuous are being used. What has bothered me for a longest of times is WHY are the names so illogical.
You use present SIMPLE to state something that ALWAYS happens. (one of use cases)
You use present CONTINUOUS for something TEMPORARY happening right now. (one of use cases)
How is that naming logical? I would sooner have it the other way around. If someone knows a good reason or a story behind it, it would help me to stop pausing for 5 seconds and think each time before I name the correct form. Even a simple memo better than "it's opposite of logical" would help.