I don't know why you would say this. Summoning is an extremely powerful tool. Drop 4 flying swarms on the board and go to town. Or, make it a 5th level spell and drop 8. Sure, they're only +3 to hit, but, most baddies aren't that hard to hit and 4d4 damage on a hit is pretty significant. Not when you can get 4 attacks per round. And, aside from a few attacks, they effectively have 44 hp each, meaning they can take a few hits that aren't hitting the party. I found land druids to be very effective.
It's funny how everyone has such different experiences.