I like to experiment with my brewing. Many brewers don't understand the desire to try new styles, split batches, add fruit, spices, oak, smoke or whatever else to beers. Personally I would be bored to death to follow someone else's recipe and get someone else's results. There are two great rewards to experimentation.
1. Experience- when I experiment I can really see how beer works, what I like, and where to go in future batches.
2. Variety- I don't want to just make a pale ale that's as good as one from the store I want to make beers that are better and different from those I can buy.
Experimentation isn't just something that keeps me brewing beers, it keeps me drinking them. While many beer drinkers will primarily stick to a few key brands I usually go for a new one to try when possible. When I do find beers I like I go back to them on occasion (like how I plan to rebrew my hoppy black saison soon) but they also inspire me to keep experimenting both with the commercial beers I purchase and the homebrews I make. While I hope to brew some more "to style" beers in the future I will be sure to experiment within the limited range of those styles. After all some brewers have made a living off of experimenting.