Those are two very different examples...
For Bruce Willis, yeah, watch the heck out of his films and celebrate his talent and the joy and entertainment that he brought to us. Everyone ends up dead, and it's rarely pretty, so perhaps we shouldn't let it ruin our past.
However... Lee died during the making of the crow and that's more complex. Was the film finished to honour his life and his skills, or was it finished purely for financial reasons?
I'd like to think it was the former, and that when we see a film it is never the work of one actor, not even a bunch of actors and a director, but hundreds of people all bringing themselves to the endeavour of making.
And that's how they live for ever. Scratching their name into the desk of the world by making something that will be here long after they have gone.
And I think that should be celebrated.