A lot of people call BTC a 'free' currency, that is to say people are free to use it as they want, without any third party control of course, and that includes the speculators. I don't don't see how speculation is a problem, as many people tend to suggest sometimes, i.e. it doesn't stop anyone from spending their BTC, using it i a p2p way, setting up their own node, etc.

Truth be told, it is going to be hard to find a bitcoiner who isn't using BTC's volatility to make profits on their investments, what is wrong with that? Absolutely nothing.