Single party consent empowers those who are underhanded in uneven situations. For instance, the ability to secretly record my employer, who has far more resources than me, benefits me. I personally benefited in being able to defend myself by using single-party consent for audio recording, which helped me both avoid legal trouble and would have allowed me to offer more evidence had it ever come to actual legal action.

There are two sides to privacy laws, and the downside is not often discussed.