YOU SAID:

how do you know whats good for me? thats my OPINION!

INTO JAPANESE

どうして私にとって良いことを知っていますか？それは私の意見です！

BACK INTO ENGLISH

Why do you know what is good for me? That is my opinion!

INTO JAPANESE

なぜ私にとって良いことを知っているのですか？それは私の意見です！

BACK INTO ENGLISH

Why do you know that is good for me? That is my opinion!

INTO JAPANESE

なぜそれが私にとって良いことを知っているのですか？それは私の意見です！

BACK INTO ENGLISH

Why do you know that is good for me? That is my opinion!