I should add, the related concept here besides 'consumer economy' which is kind of a fundamental of the US economic machine is 'velocity of money'. It's an intriguing economic concept for those unfamiliar. [1]
I'm party from a small town, my grandfather was notoriously thrifty (and a little wealthy) and he would never eat out. A dinner at the local diner would be a 'big thing' for him. Coffee shops and little such things are impossible to take hold in this small town because people are like this. They are not poor. Just thrifty. Which is fine ... but it means no secondary economy. The only thing that survives is the gas station / resto out by the highway for passers through.
The town is definitely large enough to accomodate 1 or 2 small places, but due to the culture, it's not going to happen.
It wasn't until later on in life (studying econ) did I realize the 'other side' of savings, and real value of money: When you buy something, you generally value it more than the money, ergo, you make a profit, we call this 'consumer surplus'. It increases the quality of your life by some nudge. Buying things that can improve your life, even if it's a coffee ... has many positive effects. Without consumption most of us would be out of jobs.
Your spending is someone else's income.
It's sounds a little nutty to say you're depriving someone else but it's kind of true.
If you see products and or services you like and they have some value to you - and you can reasonably afford - it's good to spend in many ways.