Question about "したことのないことばかり"


I came across the dialog and was puzzling over the sentence "したことのないことばかり"

> （中野さんと大和さんがおみあいをしています。）
>
> 中野：大和さんは、お休みの日はなにをされていますか。
>
> 大和：ゴルフをしたり美術館を見学したりして、それに絵を書いたり裁縫したりするのです。
>
> 中野：わあ、すごいですね。
>
> 大和：中野さんは？
>
> 中野：私は、パチンコやカラオケをしたりして、時々軽くお酒を飲むのも好きです。
>
> 大和：フフフ、 **私がしたことのないことばかり** です。面白いでしょうね。

I think I understand bold part, but is it possible that 大和 replies this
sentence instead?

> 大和：フフフ、 **私がしなかったことばかり** です。面白いでしょうね。

Is there any change in meaning compared to the original sentence?

(The reason why I ask such question is because I think the original sentence
uses two "こと", won't that be a little bit redundant?)




I will start by briefly explaining what 「お見合{みあ}い」 is for those unfamiliar
with the custom and/or the term. It is a formal kind of meeting for a man and
woman with a view to marriage. The conversation above is taking place at such
a meeting.

From the convo, 中野{なかの} is the man and 大和{やまと}, the woman. As anyone would
expect, "hobbies" is a common topic at お見合い and that is exactly what is being
talked about here.

As seen in the convo, however, the two people might not share a favorite
pastime. So, the woman says:

> 「私がした **こと** のない **こと** ばかりです。」
>
> = "I have no experience in doing any of those things."

This is said upon finding out what the man's hobbies are.

_**The first こと means "experience" (～ことがある/～ことがない) and the second こと means
"things".**_ Thus, using こと twice is not at all redundant. The sentence is
perfectly correct and natural-sounding.

Finally, could 大和 have instead said:

> 「私が **しなかった** ことばかりです。」?

No, no chance at all. Why not?

The two are discussing their **hobbies**. They are not discussing the actions
they performed on a particular occasion in the past. They are talking about
what they like to do **habitually**. This is why you cannot use the past tense
「した」 or 「しなかった」. Hope you are following this logic.

Let us suppose that you went to Hawaii last year and I went there just
recently and we are talking about what we did while in Hawaii. You did
activities A, B, C and D and I did X, Y and Z.

Upon finding out about what I did, you might say:

> 「私がしなかったことばかりです。」
>
> = "I didn't do any of those things." Or more literally, "All of those are
> the things that I didn't do."

That will be a very natural reply.

