Question
Why does a Jewish man think G-d every morning for not making him a woman?
Answer
Jewish men thank G-d for many things on arising every morning. In particular, they thank G-d for giving them the opportunity to serve Him by fulfilling a large number of commandments — more commandments than have to be fulfilled by non-Jews (who are responsible only for the seven Noahide commandments) or Jewish women (who are exempt from positive commandments that must be fulfilled at specific times). The source for this is Talmud Menachos 43b.