Why networking events are a waste of time:
The most basic problem with networking events is that they are mixing bowls for professionals who are all there for different reasons and purposes. Everyone there is focused on his or her own personal agenda. And all agendas are different, whether it’s signing a new client, creating awareness for their startup or service company, or connecting with someone in the hopes of developing a mutually beneficial business relationship. Everyone is playing a different tune, a different game, which is why there are usually no clear outcomes and no clear winners. Since there is no focus and no solid unifying agenda, it’s most likely a waste of time! (By the way the same is applicable to business expos!)
 
https://hbr.org/2016/09/dont-waste-your-time-on-networking-events?