question about continuation bets

[orenthal]

is a continuation bet worth it when you dont connect on the flop and you know that everyone behind you will call no matter what?
totally random example:
say for instance you have AK and the flop is 3 7 Q. should you bet if first to act or checked into if you know that it will be called by the donks on your table? i know that you could never know 100%, but if you have a pretty good feel for the table you can usually be pretty sure.