Why do I always feel bad after cutting my hair?

I usually only go to the hairdresser when I think my hair is too long and damaged.
At the beginning, just after the haircut, I feel good, happy. But then, after days, I start to miss my hair, I always think my previous hairstyle was better than the one I have and always think my hair is too short. I can't stop thinking about it.
Even if people keep on telling me it suits me and it's cute, I really miss my longer hair.

Have you ever experienced it? Why do I always feel like this?
Why do I always feel bad after cutting my hair?
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