PDT 2/2 : Why has tipping increased?

[SoloAJ]

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my g/f claims that in the parts of the midwest she's lived (Wis. & Indiana) 10% is pretty common. I suspect she's just cheap. Can anyone from a flyover state confirm this?

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I'm from Illinois (non-Chicago area) and I personally tip based off 20%. Sometimes more sometimes less. I don't know anyone who tips based off 10% in non-Chicago IL, which should be comparable to Indiana and Wisconsin.

I don't know why I tip as high as I do. It isn't about "being a baller" or anything, because I certainly am not that.

I think that it is like Ray Zee said. I just have less of a value for money. It's not detrimental for me. I don't have credit card debt or anything like that (just college loans). The other reason, I assume, is that there is some intrinsic motivation within me and I enjoy helping others, also as Ray stated.