Checking flops is a viable strategy and has many uses- trap- pot control- get information multiway- get value from weaker hands that will fold flop but not turn or river etc etcOpponents were lucky to call allin in the game
In matters poker, the word always should never be used. For what it's worth the word never should also never be used.Always raise LOL
Depends who called, how many players are in the hand, how big your raise was, effective stack, board texture and whether it is compatible with your hand or not, etc. etc. it's never supposed to be simple.If you raised with Ace King, aren't you supposed to make a continuation bet?
Better to bet and make the draws pay, even if you have a made hand. Check the nut flush and the guy with 2 pair will check behind you.Checking the flop is a standard play to get an opponent to bet into your made hand, usually a set or some kind of nice draw like an open ender or nut-flush.
It is bad to gamble with money that is important to you, that is, with money that you cannot afford to spend. If you check on the flop, it does not mean that you are obliged to call later in response to your opponent's all-inOpponents were lucky to call allin in the game