I worked at a casino as a dealer through college. A lot of incidents were pretty sad, especially with regulars that you liked. One regular would tell me about his middle school age kids, and then I would realize the next week or so later that he was missing their school plays/recitals etc because he was at the tables. I remember working an overnight one Christmas Eve and begging him to go home when 6/7am rolled around because his kids would be up and opening presents.
Other times just people screaming at you for “stealing” their mortgage payments from them that month. Then seeing them back again the next day.