I have and still do love to shoot my 40, but have moved over to 357 SIG for carry.I have been shooting 40 since it came out. I personally like the round. I also like the idea that I can swap barrels to 357 Sig. That's another conversation.
Reloading I can shoot either for less than the 17¢ a round folks pay for 9mm. Four
members that shoot at the range all have 40's. I don't think it's dead but certainly
not being purchased at the rate of the 9mm. Then too, nothing else is either.