Thanks for the replies. That helps alot. I found the following in the man page for tune2fs.
You should strongly consider the consequences of disabling
mount-count-dependent checking entirely. Bad disk drives,
cables, memory, and kernel bugs could all corrupt a filesystem
without marking the filesystem dirty or in error. If you are
using journaling on your filesystem, your filesystem will never
be marked dirty, so it will not normally be checked. A filesys‐
tem error detected by the kernel will still force an fsck on the
next reboot, but it may already be too late to prevent data loss
at that point.
To me this plainly says that fsck should still be run occasionally just to be safe.
"Fair Winds and Following Seas"
========== Leroy Jethro Gibbs (NCIS).