Because I wanted $...?
Isn't that the whole point?
No one is questioning the reason for selling them in general. I think the purpose of the question was to get at why now and not later? Are you afraid the market will tank soon? Why not hold out for $50/BTC or $100 for that matter? The question is really, "Why now?"
Look at the prices. Look at the economy structure. Compare it to past historical events--it's a bubble. Prices shoot up
exponentially...and it is going to crash. Look at the gold market for example...
If you are hoarding 100+ BTC and you're waiting for it to be worth $100 USD/BTC...good luck with that

Honestly, how long do you expect the current market to hold up?