My beer seems to be fermenting more quickly than predicted by the kit. The last beer I made was ready (with the correct final gravity) in just under a week rather than the 2 weeks predicted by the kit. The beer I have fermenting right now seems like it will be finished fermenting in the next few days (the bubbles are coming very slowly) and it's only been in the carboy for about 5 days. The kit predicted 2-3 weeks.
The last beer was an amber ale and this one is a chocolate stout. The carboy is being kept in a closet at about 68 degrees.
If I reach my final gravity does it matter how quickly the beer ferments? Should I be worried about this?