i was never a great climber, but worked at getting better at it; first for conservation of energy on tour, then later for the joy of descending. strafing a good twisty canyon on the moto is fun, as is a good alpine ski run... a good rip down a mountain road on a quality road bike is my favorite combination of those things. spending half an hour (or more) coming back down the trail on the side of a mountain you spent all day riding up is a close second. anyone talking about momentum to get up hills doesn't understand what the kind of climbing we're talking about is... as evidenced by the people here who are confusing "steep" with "elevation". but clearly, there's some misunderstanding on some folks' part about climbing; as someone who was never more than adequate at it but could do it on a loaded touring bike for days on end, i can attest that lactic acid buildup and exhaustion can all be dealt with by gearing, technique and training.