One who trusts in H'shem pursues a source of livelihood that is comfortable and easy on the body and soul. He knows there is no reason to seek out difficult labor that can endanger his physical or spiritual life. He understands that his sustenance will come from H'shem, not his choice of labor
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Nefesh Hachaim
The entire creation was brought into existence purely for Klal Yisroel to study the Torah. When Am Yisroel received the Torah "GD was happy to have created the world, for now, its purpose was fulfilled.
Gate Four Chapter 13 pg 153