Could this be the real reason God gave the Torah to Israel? TB Beitzah 25

Thanks to Rami bar Abba, the second half of today's daf TB Beitzah goes on a tangent about appropriate etiquette according to the rabbis. "Rami bar Abba said: The mitzva of flaying and cutting the animal into pieces is mentioned in the Torah with regard to the burnt-offering, and the same is true for butchers. That is to say, we learn from the halakhot of the burnt offering that a butcher should first remove the hide and cut the animal into pieces. From here the Torah taught proper etiquette, that a person should not eat meat before flaying and cutting the animal into pieces." (Sefaria.org translation) 

"The Sages teach proper manners unconnected to any prohibition, as it is taught in a baraita: A person should not eat garlic or onions from the side of its head, i.e., its roots, but rather from the side of its leaves. And if he did eat in that manner, he gives the appearance of being a glutton. Similarly, a person should not drink his cup of wine all at once, and if he did drink in this manner, he gives the appearance of being a greedy drinker. The Sages taught in this regard: One who drinks his cup all at once is a greedy drinker; if he does so in two swallows, this is proper etiquette; in three swallows, he is of haughty spirit, as he presents himself as overly delicate and refined." (Sefaria.org translation) 

You might think God gave the Torah to Israel as a reward for our righteous behavior. Rabbi Meir taught just the opposite. We needed the Torah and commandments in order to curb our natural unethical behavior. "The Gemara considers another aspect of the character of the Jewish people. It is taught in a baraita in the name of Rabbi Meir: For what reason was the Torah given to the Jewish people? It is because they are impudent, and Torah study will weaken and humble them. A Sage of the school of Rabbi Yishmael taught the following with regard to the verse: “From His right hand went a fiery law for them” (Deuteronomy 33:2); The Holy One, Blessed be He, said: Based on their nature and character, these people, the Jews, are fit to be given a fiery law, a hard and scorching faith. Some say a different version of this baraita: The ways and nature of these people, the Jews, are like fire, as, were it not for the fact that the Torah was given to the Jewish people, whose study and observance restrains them, no nation or tongue could withstand them.

"And this is the same as what Rabbi Shimon ben Lakish said: There are three impudent ones: The Jewish people among the nations; the dog among animals; and the rooster among birds. And some say: Also the goat among small cattle. And some say: Also the caper bush among trees." (Sefaia.org translation)

As you can see, one of the major purposes of the commandments is to refine and perfect our human nature. I like to believe that through our study of Torah and the observance of the mitzvot throughout the millennia, we have succeeded in becoming the ethical people that God has envisioned for us.

For more on this reason and other rabbinic reasons for the mitzvot you can file this link for a short essay. https://www.myjewishlearning.com/article/rabbinic-reasons-for-the-mitzvot/