Have you considered gliding? I've only been in light aircraft a couple of times, but I found it to be rather predictable and boring.
Potentially interesting things include:
- having good surprises when going cross-country, e.g. finding good thermals or cloud streets etc
- not knowing what the next flight will bring - will it be 6 minutes or 6 hours?
- thermalling with buzzards and other gliders
- not falling asleep through boredom when flying straight and level
- deliberately spinning "near" the ground
- and, of course, the sheer exhilaration of a winch launch