I like the feel of the wind (even though there is no wind) when I ride.

I like making the lights when I ride, or perhaps it is more I dislike getting stuck at lights. So I like being able to hold 17 1/2 in a 35 zone where the lights are well timed.

I like having enough pop to outrun any dog who is actually behind me or to drop annoying cyclists. (I find few are annoying, but those few...)

I liked it when I had the legs to do a long climb and not be totally spent.

To me speed and endurance are tools on the way to fun, not a goal on their own. Valuable tools however.