I know that many gamblers in casino games will choose Poker because of some personal skills and choices to make when playing. The first time when I played Poker games, I was novice on the board which I don't know what was going on and I was like an observer or a supervisor in the seat. When it is my turned to play I saw some features below my username like, Fold, Raise, bet, etc and I was only clicking on Raise and it was later I understood all those features and play well with others but I loss out.
Slot games like fruit matching or cutting, I have never win any day. So I don't even go there. But in crash games I have won good number of times although crash game is mathematical (calculative). If the player knows when to hit the plane or fly, he can make some wins. Among all Poker the s the most preferable casino game.
One can't possible be an observer or a supervisor on a game he or she doesnt know how to play, so for you to say that you were like an observer or supervisor in the poker table is a wrong choice of words but it's completely understandable.
I totally agree with you that poker would be the most prefered game for all or majority of gamblers, and it would have been same for me if I knew how to play poker, but unfortunately, I don't so I have to go with another game I understand and know how to play..
And my choice between Crash and slot game is Crash, though both are luck based game but I prefer crash because it more interesting than slot games, and also have this feeling of being in control of how many Xs you want to win, it's just like someone driving a manual car, you are in charge of the gearbox and can choose to drive with any gear of your choice, unlike automatic drive where the car system chooses gear for you.