[Garland]

For people to say you have to bet, keep an open mind. Yes, without any other given information, the default line would be to bet/3-bet. This would be an especially standard play at a passive table.

But let's suppose we add some more information:

(a) Button is a habitual position bettor. You have the option to check-raise.
(b) MP3 and button are both very aggressive. You have the option to check-raise.

With these two scenarios, you'll often pick up a bet or two you normally wouldn't get if you bet out, and you can encounter the field with a check-raise.

It sounds to me like there are some inflexible people out there. However, I do agree that check/call should not be considered in this spot.

Garland