When does it make sense to show the hand and what would be the reason to do so? When is it better to not show the hands? I usually never show my cards even though I won.. I dont want my opponents know my playing behavier.
Like everything else, it depends. If it gets folded around to me in the BB, I always hit the "Rabbits" button since it makes no difference. If a lot of players are showing, then I'll show in cases where it makes no difference, like if you put in a big 3! and everyone drops, then show the pocket aces or kings, they won't be surprised by that, and you reveal nothing. Or you flopped a Full or Quads, again, they won't be the least bit surprised you had that. That way, you look like a sport to the other players, and good public relations are a part of the game.
Other times, I might show if I've been running card dead, haven't played a hand in six orbits, I just might go ahead and show after I finally raise it out of the #1 hole with (7,2-o) to keep 'em guessing. (Although it's better if you flop something like (K,2,7) and stack a Big Slick.) That can, however, look like you're conning them, and they may not be conned. Depends on how astute they are.
There are other times where I will never, ever show. One reg was a definite Level-2 thinker, and I triple barrel bluffed him several times with nothing. No way in hell I'd
ever show and clue him in. I never show a big lay-down. If I have to muck the underfull, no way in
hell am I letting them know. That's a very bad habit, and when Mr. Fish shows he had me beat after I drop that nut flush after his river shove when the board paired on the end just confirms the accuracy if my read on his play.