I didn't. I'd consider myself to be serious, and I'll presume out of 15,000 other companies there exist some more people like me. I don't think you'll be disappointed by the experience.
I'd encourage seeking out other, smaller founder mastermind groups - you'll get much more value there.
Don't mind my negative commentary - I know this was a difficult day for you, and I appreciate the hard decisions that need to be made.
As a founder, though, I have a very hard time finding groups of other founders who have reached a certain level of success and was very excited to be a part of that. It's very difficult finding something like that and I really hope you guys can consider my ideas here.
How do you know they're bad? And maybe it's the case that having ONE person in your group, who is the "right" person, will actually be what makes the group valuable...
Not saying that will prove to be the case, but I think you're rushing to judgment a bit.