1. Why do you not like becoming a journalist?

Question

Because I want to become an office worker.

2. Why don't you not like becoming a journalist?

Because I want to become an office worker.

(Are both questions the same? Are the answers suitable for each question?)

3. This is what I wanted.
3-1. This is the thing that I wanted.

4. These are what I wanted.
4-1. These are the things that I wanted.

5. This is what I wanted.
5-1. This is all that I watned.

(Is each pair the same?)

Answer 1

1 and 2 --
Both questions are the same, but the question in #2 is more colloquial, less stilted. The answer is fine.

3 and 4 --
These pairs are fine -- each pair means the same.

5 is different, though.
5 implies that the person has found the one thing he/she wanted.
5-1 implies that the person found what he/she wanted and wants nothing else!