Caffeine/coffee: A need or want?

Caffeine: A Want or Need? 
I was getting ready for work this morning and told my husband that I NEEDED coffee as our lo didn't sleep through the night and I needed something to help me through my 8 hour work day. Anyway, he corrected me to say, "I WANTED coffee. Not NEED." We had a debate on whether coffee/caffeine was a need or a want. 🙄 I seriously struggle to make it through the day without it. Therefore I need it. Lol. Your thoughts ladies? 

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