What's boring about it?
I say this with 100% honesty: it's more fun that dry fly fishing for me.
To me, dry fly fishing is lazy. I look for a rise, I cover it, and I catch the fish if he eats. There are two dimensions, and I can often visually ID what the fish are eating. I can even get an idea of how big the fish is before I target it.
Nymphing is 3D. It's a guessing game, and it requires close observation to do well. I can usually make adjustments to fix my errors after a few casts/misses with dries... with nymphs, I'll sometimes find myself scratching my head for an entire weekend trip before I figure them out right before it's time to leave.
Nymphing is where it's at for excitement. The take is less spectacular, but everything leading up to it is superior IMO.
If searching with dries was more effective, I'd probably prefer that. Covering tons of water looking for a surprise is what does it for me. This is why I switch to terrestrials when it's time.