"...I'll usually tip" Interesting. My girlfriend gets upset with me because I always tip. Generously, regardless of the level of service. I also empty my walle

"...I'll usually tip" Interesting. My girlfriend gets upset with me because I always tip. Generously, regardless of the level of service. I also empty my wallet of coins and give it to the first person asking for change. That's driven entirely by knowing that by earning over $100k you're in the top 1% of earners on the planet (median world-wide income is just $10k).