Many many times per day in the abstract sense of living things that stop since I am surrounded by them EVERYWHERE and often kill them myself.

Still multiple times per day, in the context of understanding that my remaining time is limited and unpredictable and I need to make good use of it.

Every two or three days in the context of "existing is WEIRD, and soon enough I will no longer exist just like 25 years ago."

It doesn't distress me, except when dealing with immediate effects of the deaths of people or other organisms that are dear to me, or could be easily prevented from being worse than they are.