Wish I could take losing a bet so calmly. For myself, it's not losing $$$ that hurts as much as the implicit indictment on my understanding of the teams involved.
Before placing a bet, I've carefully attempted to measure both team's potential performance and their consistency in delivering that performance. So when I lose a bet, it's because I'm ignorant, and have to try harder.
Earlier this year, a homeless Wellingtonian won about $70,000 by betting an eight leg NRL multi. This chap doesn't bet unless he's reasonably certain and he puts in a lot of effort following the comp to understand team form.
I want the skills that come with consistently picking winners. and I see betting as a reality check on measuring those skills.
My 2 cents.