Interrogative content clause

Hi,

You don't understand what it is like to have these addictions.

I'd like know how native speakers make a sentence like the underlined.

Here is what I think.

To have these addictions is like something.

When you change this basic version to a version with extraposition, the sentence becomes as follows:

It is like something to have these addictions.

Now you replace 'something' with 'what' and rewrite the whole sentence as an interrogative question.

What is it like to have these addictions?

And inserting this question into the main clause gives:

I don't understand what it is like to have these addictions.

Did I get that right? Any suggestions would be appreciated.