I always thought that "noatime" (instead of "relatime") was preferable on flash storage in order to reduce wear. I was surprised to see this in the Raspberry Pi version of Kali:

Code:
root@kali:~# mount | grep ext4
/dev/root on / type ext4 (rw,relatime,norecovery)
I was going to replace relatime with noatime in fstab but... There is no fstab.

So my questions are:

1 - Why not noatime?
2 - Where would I put it if I wanted it?

(Feel free to brush me off to StackExchange or a Linux From Scratch tutorial, if so warranted).
Thanks.