The vowel pointing was added about 600 AD.
There are two speculations as to why:
To make the pronunciation easier.
To hide allusions to Christ which exist when applying the 32 rules of Rabbi Eliezer.
#1 doesn't make much sense since vowels are not used in Modern Hebrew newspapers.
#2 has the strength of argument in that the Jews who rejected Christ had ...
As other answers have mentioned, what is meant is simply what is said: many renderings of the Torah leave out the vowel markers (and punctuation). As several comments have offered, this is a common feature of a lot of Hebrew text, and more broadly, is found in quite a few languages (off the top of my head, I believe Arabic is also often written this way, and ...
Vowels in Hebrew - called n'kudot - are written as dots and lines surrounding the letters. In an actual Torah - written on parchment - these symbols aren't there.
As an example, here's a picture of a book called a "tikkun", which is used to help learn the chanting for the traditional way to read the Torah:
On the right side is text with ...