You may meet some great people and have some interesting conversations. Still, you will probably not build business relationships to deliver an ongoing stream of qualified referrals.
Instead, find a networking event that is a better fit, or invest that time 1-1, building meaningful relationships with key prospects or people who know your key prospects.
If you can't bear to skip the event, at least go into the event with a specific goal.
You could set a goal to meet three new people. You could set a goal to reconnect with five people you already know. You could set a goal to connect two people who need to know each other.
If you will spend your time attending an event, make it count!
The additional benefit of setting a goal in advance is that once you achieve it, you are free to leave-you have already had a successful event.