The OP is right. I am not happy when I lose or let's put this this way, when I do not win 100% back of the money I put in. However, I always look forward to play slots, not because I am addicted to it but  because it seems to me as if there's always something new to learn. In addition, maybe this excitement may turn into anxiety if I play any other game say poke but for slots, it's always a mix of excitement and adventure.