About the best benefit is if you need customer service to find new flights, no line for that at least. Hilarious you need a lounge pass to get no wait customer service and clean restrooms.
What United lounges have you been to?
The ones I've been to, for example Newark, have free unlimited restaurant-quality table service, and unlimited premium alcohol, including unlimited Champagne. To be honest I usually look for longer layovers because it's a bit of a treat in there. I love working on their glowing mock-marble bar tops with unlimited iced Champs.
And that's just the basic business-class lounge. I once had the fortune to be in United's Global First lounge in SF, and that was something more again.
https://itstravelseason.com/airlines/united-polaris-lounge-f...
The United affiliate lounges in much of east Asia make United's own look even more embarrassing unless you're in one of the international first/business ones. Although when the Chicago Polaris lounge was new I got stuck there on a super delayed flight and managed to kill a bottle of Yamazaki whiskey almost by myself, which probably wasn't great for my health and against policy but I slept like a baby on the way to Germany when we finally departed.
Remember everyone gets it, so the lounge may be full of screaming kids and mooches pillaging napkins and ketchup!