Very informative.
I guess the question is why not just have a printing press do it?
Is there something in Judaism that requires this or doing it this way makes it very special?
Judaism requires every letter in the Torah to be written לשם קדושת ספר תורה (for the sake of the sanctity of the Torah) and every part of G-Ds holy name mentioned in the Torah to be written לשם קדושת השם (for the sake of the sanctity of G-Ds holy name).
In other words, you have to write it with the intention of it being a Torah and with the intention of it being G-Ds name.
Therefore it can't be printed on a press (which has no thoughts) or by someone who doesn't believe in G-D or the sanctity of the Torah.
Additionally, while many of the mistakes which can come up in a Torah are identifiable in a check-up, or during the weekly Torah reading, knowing what was in the mind of the scribe can not be checked. Therefore people are very scruples to only commission a Torah from someone who you know to be extremely G-D fearing, (at least to the best of your knowledge).
The same would go for the making of Tefillin and Mezuzot.