I've forgotten how to climb out of the saddle when cycling. I've been so accustomed cycling up hills @ 12-17% grades in low gear while seated..

(I have never seen my partner climb out of his bike when mounting mountain passes and far steeper hills with double amount of pannier weight plus a bike trailer in tow. I don't he ever will- not at his age. He remains seated and patiently grinds upward.)

It actually is inspiring to ride with a partner like this: there is lots of hope for those who remain seated in the saddle. You just have to understand how to use your gears at the right time, keep the right cadence and be patient with self.