From what I know, Koshite is "this is why", tsukiamono is "useless", ni naru
no wa is "become" and orega iru kara is "because I'm here". So is it right to
read it as "this is why it became useless, because I'm here, isn't it right?"

They talk about a house that had been neglected. Full sentence:

> 荒れ放題だった家がこうして使い物になるのは、俺がいるからじゃないか？
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2017-12-15T09:14:11.303
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2017-12-21T08:18:25.553
2017-12-21T08:18:25.553
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question
translation
こうして使い物になるのは俺がいるからじゃないか？ meaning
> 「荒{あ}れ放題{ほうだい}だった家{いえ}がこうして使{つか}い物{もの}になるのは、俺{おれ}がいるからじゃないか？ 」

Not sure how you wound up thinking that 「使い物になる」 would mean " ** _useless_**
". It actually means the opposite of that; It means " ** _to be fit for use_**
".

> "The reason that the house that had been left to dilapidation is now fit to
> use like this is because I am here, isn't it?"
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2017-12-15T12:48:01.290
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answer