What problem does this solve or what need does it fill?

Game logic commonly branches based on the presence or absence of events.
However, the only way to read events is to consume them.
You can of course drain and then reconstitute the events, but this is terrible.

What solution would you like?

Add a peek method to events.

What alternative(s) have you considered?

Use size hints to provide a dedicated .is_empty method on events instead.