Why is there usually no interest on checking accounts?

The money is available at any time and you can use your entire balance without notice, regardless of whether it is in a current account or a current account. So what is the reason why you usually don't receive any interest on a checking account? What is different here from the banks’ perspective? Because daily money accounts are perhaps less subject to fluctuations? Are banks perhaps also taking advantage of the laziness of their customers who park (almost) everything in their current account? submitted by /u/Conscious_Year_670