Rate of Bitcoins is fluctuating. Can anyone say why? Maybe but think of it.. If we received 1BTC for freelancing. While price increases... Our 779 USD payment for the freelancing is now 9xx USD. Where is our profits coming from since BTC is a currency we can use? BTCBTCBTCBTCBTC
the situations is not always good because sometimes bitcoin price could dropped more than $100 in a day however if you were received 1 bitcoin as your freelancing salary and hold it for long term i think that more good because indirectly you have good investment for the future
$100 per day drop is a thing of the past. Bitcoin has become more stable, over the years. So unless a major Exchange or Wallet hack occurs, I don't think that the exchange rates will drop by $100 per coin in a single day. And regarding the second part of your post, it is always preferable to hold your coins for the long term. But if you intend to convert them to fiat, then please do it as soon as you receive the coins.