The thing is if you want to you could use LTS. But then install the
newer versions of the software you like to use so you're up todate by
compiling all the apps. This takes time and it is easier to install a
new release with all updates.
If you're keen... and have a spare machine - to KNOW linux you can
build your own system in Gentoo or Linux from Scratch [LFS]. One of my
plans... someday! if too many other things don't get in the way. But
someone told me it takes a few months of spare time to do it. Hence
why folk use distro releases. Some folk say well worth the effort to
KNOW linux but then revert back to releases.