YOU SAID:
Why do I like myself so much?
INTO JAPANESE
どうしてそんなに自分が好きなの?
BACK INTO ENGLISH
Why do you like yourself so much?
INTO JAPANESE
なぜあなたは自分がそんなに好きですか?
BACK INTO ENGLISH
Why do you like yourself so much?
That didn't even make that much sense in English.