Is it Better that Humans exist or not

תָּנוּ רַבָּנַן: שְׁתֵּי שָׁנִים וּמֶחֱצָה נֶחְלְקוּ בֵּית שַׁמַּאי וּבֵית הִלֵּל. הַלָּלוּ אוֹמְרִים: נוֹחַ לוֹ לְאָדָם שֶׁלֹּא נִבְרָא יוֹתֵר מִשֶּׁנִּבְרָא, וְהַלָּלוּ אוֹמְרִים: נוֹחַ לוֹ לְאָדָם שֶׁנִּבְרָא יוֹתֵר מִשֶּׁלֹּא נִבְרָא. נִמְנוּ וְגָמְרוּ: נוֹחַ לוֹ לְאָדָם שֶׁלֹּא נִבְרָא יוֹתֵר מִשֶּׁנִּבְרָא, עַכְשָׁיו שֶׁנִּבְרָא — יְפַשְׁפֵּשׁ בְּמַעֲשָׂיו. וְאָמְרִי לַהּ: יְמַשְׁמֵשׁ בְּמַעֲשָׂיו.

Eruvin 13b:14

The Sages taught the following baraita: For two and a half years, Beit Shammai and Beit Hillel disagreed. These say: It would have been preferable had man not been created than to have been created. And those said: It is preferable for man to have been created than had he not been created. Ultimately, they were counted and concluded: It would have been preferable had man not been created than to have been created. However, now that he has been created, he should examine his actions that he has performed and seek to correct them. And some say: He should scrutinize his planned actions and evaluate whether or not and in what manner those actions should be performed, so that he will not sin.

אָמַר רַבִּי סִימוֹן, בְּשָׁעָה שֶׁבָּא הַקָּדוֹשׁ בָּרוּךְ הוּא לִבְרֹאת אֶת אָדָם הָרִאשׁוֹן, נַעֲשׂוּ מַלְאֲכֵי הַשָּׁרֵת כִּתִּים כִּתִּים, וַחֲבוּרוֹת חֲבוּרוֹת, מֵהֶם אוֹמְרִים אַל יִבָּרֵא, וּמֵהֶם אוֹמְרִים יִבָּרֵא, הֲדָא הוּא דִכְתִיב (תהלים פה, יא): חֶסֶד וֶאֱמֶת נִפְגָּשׁוּ צֶדֶק וְשָׁלוֹם נָשָׁקוּ. חֶסֶד אוֹמֵר יִבָּרֵא, שֶׁהוּא גּוֹמֵל חֲסָדִים. וֶאֱמֶת אוֹמֵר אַל יִבָּרֵא, שֶׁכֻּלּוֹ שְׁקָרִים. צֶדֶק אוֹמֵר יִבָּרֵא, שֶׁהוּא עוֹשֶׂה צְדָקוֹת. שָׁלוֹם אוֹמֵר אַל יִבָּרֵא, דְּכוּלֵיהּ קְטָטָה. מֶה עָשָׂה הַקָּדוֹשׁ בָּרוּךְ הוּא נָטַל אֱמֶת וְהִשְׁלִיכוֹ לָאָרֶץ, הֲדָא הוּא דִכְתִיב (דניאל ח, יב): וְתַשְׁלֵךְ אֱמֶת אַרְצָה, אָמְרוּ מַלְאֲכֵי הַשָּׁרֵת לִפְנֵי הַקָּדוֹשׁ בָּרוּךְ הוּא, רִבּוֹן הָעוֹלָמִים מָה אַתָּה מְבַזֶּה תַּכְסִיס אַלְטִיכְסְיָה שֶׁלָּךְ, תַּעֲלֶה אֱמֶת מִן הָאָרֶץ, הֲדָא הוּא דִכְתִיב (תהלים פה, יב): אֱמֶת מֵאֶרֶץ תִּצְמָח. רַבָּנָן אָמְרֵי לָהּ בְּשֵׁם רַבִּי חֲנִינָא בַּר אִידֵי וְרַבִּי פִּינְחָס וְרַבִּי חֶלְקִיָּה בְּשֵׁם רַבִּי סִימוֹן אָמַר, מְאֹד, הוּא אָדָם. הֲדָא הוּא דִכְתִיב (בראשית א, לא): וַיַּרְא אֱלֹהִים אֶת כָּל אֲשֶׁר עָשָׂה וְהִנֵּה טוֹב מְאֹד, וְהִנֵּה טוֹב אָדָם. רַב הוּנָא רַבָּהּ שֶׁל צִפּוֹרִין אֲמַר עַד שֶׁמַּלְאֲכֵי הַשָּׁרֵת מִדַּיְּנִין אֵלּוּ עִם אֵלּוּ וּמִתְעַסְּקִין אֵלּוּ עִם אֵלּוּ בְּרָאוֹ הַקָּדוֹשׁ בָּרוּךְ הוּא. אָמַר לָהֶן מָה אַתֶּם מִדַּיְּנִין כְּבָר נַעֲשָׂה אָדָם.

Rabbi Simon said: at the time when the Holy Blessed One came to create the first human, the ministering angels split into groups and factions. Some said: "they should not be created!" and some said "they should be created!" This is what is referred to when it says "lovingkindness and truth meet, justice and peace kiss." (Psalms 85:11)

Lovingkindness said, "they should be created, for they do acts of lovingkindness."

Truth said, "they should not be created, for they are entirely lies."

Justice said, "they should be created, for they do justice."

Peace said, "they should not be created, for they are entirely discord."

What did the Holy Blessed One do? Took Truth and threw it down to the earth, and this is what is referred to by "it hurled truth to the ground" (Daniel 8:12). The ministering angels said before the Holy Blessed One, "Sovereign of the Universe! Why are you shaming the chief of your court? Let truth rise from the earth," and this is what is referred to by "truth shall rise up from the earth" (Psalms 85:12).

The rabbis taught in the name of Rabbi Chanina bar Idi and Rabbi Pinchas and Rabbi Chelkiyah in the name of Rabbi Simon said: me'od is Adam (they're the same letters). This is what is referred to when it says: "God saw everything God created and behold it was very good" --behold Adam (i.e. humanity) was good. Rav Huna, the Rabbi of Tzipporin said: "while the ministering angels were arguing and occupying each other with this, the Holy Blessed One created Adam, and said to them, 'why are you arguing about this, Adam was already created.'"