Fastpass was created to allow guests more time to shop and eat. They know people come for the rides, so it pushes people through rides as quickly as possible so they'll have more down time to spend money at the park.
If you want the full experience, wait in line. If you want to just get on the ride ASAP, then sorry, but you miss part of the set up. It's the trade off for having a lesser wait. You spent less time on the attraction, you're going to get a lesser experience.
The problem with Fastpass queues which run parallel, is it punishes standby guests by often forcing queuing areas to be the lesser themed and more uncomfortable outdoor portions of the queue, then having the merge point surge guests quickly through the half-empty themed air-conditioned queue. I miss the days of exploring Mara's temple and taking in the sights. Now, you wait 45 minutes outside, then rush past the foyer, the obelisk, the flooded catacombs, the bat cave, and spike room. I'd rather have spent the 45 minutes inside the indoor queue looking at these amazing detailed scenes and sets, but fastpass punishes us to keep the indoor portion nice and clear.
I hope one day Indy and Space Mountain can redesign the Fastpass queue to just enter through the exit and allow standby guests to get the full experience. FOP did it right.