I go through 20 baht notes like water in Bangkok, but thats just on GOOD food service folks and taxis, or the lady that bags my groceries or the doormen/security
In Siem Reap, I usually carry $20 in 1,000 reil notes ($.25). I hand them out left and right. I get treated like a king. And when you see how ordinary people live, it should matter not to you.
Im from the USA, I won lifes lottery, Im not going to bregrudge folks my spare change if they are helping me out. Like carrying my groceries, folding my laundry, getting me into restricted areas in Angkor, hustling to get something done for me, watering my plants, picking up fruit, negotiating with the chicken shack girls, sitting patiently while I chat up backpackers, sharing some homebrew, carrying the plants, etc
Its the ordinary people in SE Asia that make your life comfortable