I thought that you must be aware of all three abrahimic religions as fasting is prescribed there as well, so in that true spirit you must be aware of the logic that muslims fast for the sake of ALLAH only. This is in context of what you said before

" As I expected a lot of people mentioned that the fact they're doing it in the name of Islam/for Allah makes it easier. I'll never be able to understand that , but I guess the closest I can relate to it is when you do something for charity such as a sponsored run or similar..."

This what i meant to say.