What's the lounge for?

One of my biggest peeves about lounges is their silly hours.

Here I am in the PHX RCC (Red Carpet Club) waiting for my 7:35pm departure flight back to SFO but we won't start boarding till well after 8:30pm due to late incoming aircraft (I hope it's incoming, it hasn't left DEN yet though!). Yet the official hours of the RCC here is till 7pm, so that's when they are going to throw us out of here. Nice!