I enjoy a good cup of coffee. I'm more than willing to spend the money on it. If I couldn't afford it one day, I'd just stop, and not have that enjoyment any more.

Yes it's addictive, and that would be hard, but I'd just have to deal with it. There's nothing intrinsically wrong with enjoying something that's at least to some degree addictive (exercise, programming, watching series on netflix) so long as there are other reasons besides the addiction satisfaction that you enjoy it. That is certainly true for coffee.