Nothing to worry about if you're not a criminal, if you're not trying to unionize (https://www.bbc.co.uk/news/uk-43507728) and if you're not trying to reveal government wrongdoing (https://www.theguardian.com/us-news/2015/mar/16/whistleblowe...).
Yes. we should. See below for why.
> Or making sure that there is always a valid reason for their communication to be read, so we don't have such abuse made against honest people?
If there's a backdoor, it will get exploited to hurt "honest people".
So it's either privacy for everyone, or no privacy for anyone.