There really are enough already. Especially now, that they are all held far from the US, the constant travel gets to be a nuisance.
Once they come back to Vegas I’ll be happy to attend them all. As is 3 or 4 a year are as much as I can do. While it’s fun to be there, travelling there is time consuming and unpleasant. And most of all, it disrupts work for a couple of weeks each time.
Conferences are useful and poductive in their own right, but there is a limit to the time and money I am willing to spend on attending them.