YOU SAID:

I don't see why i am doing this

INTO JAPANESE

なぜ私はこれをやっているのかわかりません

BACK INTO ENGLISH

I don't know why I am doing this

INTO JAPANESE

なぜ私はこれをしているのか分かりません

BACK INTO ENGLISH

I don't know why I do this

INTO JAPANESE

なぜそうするのか分かりません

BACK INTO ENGLISH

I don't know why

INTO JAPANESE

どうしてか分からない

BACK INTO ENGLISH

I don't know why.

INTO JAPANESE

どうしてか分からない

BACK INTO ENGLISH

I don't know why.