Diamond actually has some value
There's a lot of negative commentary about status and upgrades. I fly out of SEA and generally have great luck with upgrades, but I get that isn't universal.
A few weeks ago I waited 45 minutes with my partner to get into the Centurion when flying Alaska. Was fine. If I'd know it would have been that long, I'd have bought the Alaska day pass. So I canceled my platinum card right after that. I don't do the coupon book thing.
Anyway. Leaving SFO today the sky lounge line was long. Diamond made the wait 2 minutes. Value.
As useless as diamond is in a general sense sometimes, no regrets just ditching AmEx.