Does it make a noticeable difference? I quit coffee once for a month or two (it's been a while) and only had 2 days of very mild headaches. After that, didn't n

Does it make a noticeable difference? I quit coffee once for a month or two (it's been a while) and only had 2 days of very mild headaches. After that, didn't notice anything except that I REALLY missed the taste of coffee :) And the ritual. I didn't notice anything when going back on coffee, either, I don't think it makes me more "productive" or focused or anything. I just like the taste.