Meaning of だけに in Japanese

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Definition of だけに

だけに(dakeni) 【丈に】

(exp) .. being the case; (precisely) because ...; as might be expected (from ..)
敵対勢力間の和平交渉再開だけに、関係は危うい。
Relations are tenuous as peace talks resume between warring factions.

その母親ははおやは子供たちこどもたちだけにしてするおきたくなかった。

The mother was reluctant to leave her children alone.

その貧しいまずしい老人ろうじんは骨と皮ほねとかわだけになってしまった。

The poor old man was reduced to just a skeleton.

The privilege is reserved exclusively for woman.

Which means that our perception of any situation depends only partly on sensory signals being received at that time.

この種の犬いぬは日本だけにいる。

This kind of dog exists only in Japan.

The poor old man was reduced to just a skeleton.

You must not base your estimation of a person on rumor alone.

Just go about your business and don't keep looking at me.

Please don't limit your opinions just to 'Yes' or 'No'.

Was the work done by him alone?