You just have to get used to it... i switch back and forth between my two MTB's, (Candy SL and Shimano SPD systems) and my road bike (Shimano SPD-SL). I always find that clicking in to the road bike is a pain in the ass until i get used to it about a mile or two into the ride. Primarily because you can't click in from either side... gotta rotate the pedal around to get the right position.
When i was younger i used to watch the road bike guys trying to balance themselves at stoplights like circus-rejects. Now i know why...
So why stick with the pedals for the road bike? Because they feeeeeel goooood and offer a very stable and even platform for road riding. Way worth trying the ass-clown balancing act if you hate clipping out.