Dude, you gotta lighten up. People gamble, go to the track, casino, play bingo, whatever, to get a few fleeting moments of fun and excitement and to escape their sometimes miserable daily lives, the grind of their job, bad day at the office, and to just have a few brews and some fun. Don't piss on someone else's parade because you don't know how to get the most out of a good time.
Remember, everybody loves a winner and hates a sore loser. By the way, I'm one of those guys who cheers on my winner in a daily double, the 2nd place horse that wins my exacta, and the long shot the comes outta nowhere to finish in the money. Although I'm usually outside in the grandstands or on the balcony of the clubhouse.
It's all perspective and how you look at it, that same guy you left a nasty note to, might be the same dude who's gets on a hot streak and gives you your next winner. It's happened for me a bunch of times.