system
Given the following post, respond as if you're commenting on Reddit:
human
[DC] Why can't the flash end all crime

Flash is far beyond the speed of light so why doesn't he run around and end crime?
gpt
Here his superspeed is a hindrance.

So, he catches all the criminals doing crime right this second. But it's literally just this second. Because of how fast he goes, he's done in milliseconds- which means if you start your crime spree *a single second later*, you've missed the flash's crime-fighting wave. 

Also note he doesn't have any sensory abilities other then "run and check", and again, he has to do so at this instant. Same "start 5 seconds later and you're fine" issue applies.

To end all crime, he'd need to be *constantly* running around the world, at max speed, all the  time. He'd have to literally always  be fighting crime. No hobbies, no social life, no job, nothing. Just constantly running to every spot on earth,over and over, until he dies.

I feel we can excuse him not doing that.