Why? I regret never having worked at a coffee shop. Now I am over 30 it doesn't feel so appropriate anymore, and I am spoiled by the IT money. But sometimes I still feel like just working in a coffee shop. Only for a while of course, the money just isn't good enough. But if it leaves you with enough energy to code on the side, it might be OK.

Also, the experience might come in handy if you ever want to open your own cafe later in life...