Why does translation take place in the cell cytosol whereas transcription takes place inside the cell nucleus, in case of an eukaryotic cell?

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Subarna Ray

Translation requires Ribosomes which are not present in the nucleus and are bound to endoplasmic reticulum or freely floating in the cytoplasm.

Som Banerjee

So my question is, why can't the ribosomes exist inside the nucleus? What's so special about the cytosolic environment that ribosomes only exist in it?