Agree with what has been said. Assuming you have low-enough gearing, it is always more efficient to remain seated and keep your cadence up. But you can get more ultimate power standing. If the hill gets really steep, standing may be your only option to keep moving once you run out of gearing. And it's often a nice change of pace, opens up your chest to get some deep breathing in, and helps stretch muscles that might be cramping up.

I'd work to add standing to your repertoire - it will add variety to your climbing and give you more options. And don't be afraid to shift up a gear or two when you stand - I find my most comfortable standing gear is one or two gears higher than my most comfortable sitting gear.

All that being said, it's a preference thing and if you prefer to chug up the hill remaining seated, there is absolutely nothing wrong with that.

- Mark