I use to drink coffee as a fun thing because as a kid, at least for me I wasn't really allowed to drink it, but now since I'm older and I have the money to buy my own I drink it. I use to drink it for fun because it was so yummy. I knew that if I kept drinking it for a purpose like to get my work done it'll become a habit and it somewhat did.
At first drinking for fun, I didn't feel the rush and then now when I drink it to study or whatever the caffeine definitely hits me. I love it because it's yummy and it gives me tons of energy. The downside of it when I don't drink it consistently my body tends to reject it and I lowkey gag or feel super tired. I try to not rely on it as much though.