Why Acacia Wood?

Dear Journal,

       This morning, I was reading Exodus 25 with my girlfriend, Jessica, and it mentioned of Acacia wood that was used for the sanctuary and the arc of covenant, which holds the two tablets of the 10 commandments, Aaron budded staff, and a bowl of manna.
       The thing that captivated my mind at this moment is Acacia wood. Why Acacia? What is it?

       So far, what I found was that the Acacia wood took a while to decay, and it was the longest to decay in the area of mount Sinai. The other thing about Acacia trees is that it was also known as Shittim, hence "the valley of Shittim" - Joel 3:18 due to the abundance of Acacia or Shittim trees.
       Here are the list of verses in the KJV Bible that mentioned of Shittim or Acacia: 26 in the book of Exodus (Chap 25:5, 10, 13, 23 and 28. Chap 26:15, 26, 32 and 37. Chap 27:1 and 6. Chap 30:1 and 5. Chap 35:7 and 24. Chap 36:20, 31, and 36. Chap 37:1, 4, 10, 15, 25, 27 and 28. Chap 38:1 and 6.), 2 in the book of Numbers (Chap 25:1 and Chap 33:49), 1 in the book of Deuteronomy (Chap 10:3), 2 in the book of Joshua (Chap 2:1 and 3:1), 1 in the book of Joel (Chap 3:18), and finally 1 in the book of Micah (chap 6:5). Note: KJV does not use the word Acacia. Instead, it used Shittim.
       I don't quite know if there is any symbolism of the Shittim or Acacia tree, but it is used for a special reason in the wilderness of Israelite's Exodus.

       Here are some facts that I found. This tree has thorns (other than the ones in Australia). The trees are difficult to germinate and usually successful at areas where the temperature can reach 80 °C or 176 °F.
       It also produces seed that is edible and acacia is found in many of the ingredients we have today like energy drinks such as Powerade, candies, mints such as Altoid mints and Eclipse gum.
       Acacia, the leaves, stem and or root is also used in medicine, paints, even perfume due to its strong fragrance.
       Acacia wood is valuable in many countries and it is used in creating furniture and houses.
       There are many different kind of Acacia tree worldwide and with many functions that it holds, no wonder God uses it for the right reason in creating His sanctuary in the wilderness.
       Now I wonder, with the many things that I can do, am I using what I do for the right reasons? After all, my body is the temple of God (1 Corinthians 16:19, 20).

       Blessings...