Answer:
What is harder to catch the faster you run?
I can fall off a building and live but in water I will die.
I travel in a gaggle.
Ten men's strength, ten men's length. Ten men can't break me, yet a young boy walks off with me. What am I?
Some will use me, others not. Some have remembered, others forgot. For profit or gain, I'm used expertly. I can't be picked off the ground or tossed into the sea. What am I?
The answer I give is yes, but what I mean is no. What was the question?