Torah is a gift, not a burden
ותתן לנו יקוק אלקנו באהבה מועדים לשמחה חגים וזמנים לששון, את יום חג השבעות הזה זמן מתן תורתנו
Hashem our G-d, with love give us festivals of happiness, holidays and times of joy, this holiday of Shavuos, the time of the giving of our Torah
In our calendar, Shavuos always falls out on the sixth day of Sivan. Something not mentioned explicitly in the Torah is the event that Shavuos commemorates. As noted in our prayers, Shavuos commemorates the giving of the Torah at Mount Sinai. This is why we read the Ten Commandments on Shavuos morning. There’s actually a disagreement in the gemarra what day the Torah was given. The Rabbis say that the Torah was given on the sixth of Sivan, whereas Rabbi Yossi says that it was given on the seventh of Sivan. Due to the underlying basis of their disagreement, we actually rule like Rabbi Yossi. If so, how can we say that the Torah was given on the sixth, when we rule it was given on the seventh?