What are the pros and cons of net neutrality?

All I hear about are the “pros”, and some of the claims about what life would be like without NN sound quite alarmist to me! No issue can ever be so one-sided. What are some downsides to NN? If, as I’ve heard, the FCC is expected to do away with Obama-era NN regulations, what are their reasons for doing so?

Thank you for reading and answering.