There is a certain amount of speculation and bitcoins value has gone up a lot more due to reasons that are worth speculating on (increased adoption) than based

There is a certain amount of speculation and bitcoins value has gone up a lot more due to reasons that are worth speculating on (increased adoption) than based on usage in its primary applications (Remittances and convenient value transfer). However, simply holding bitcoin as a hedge against inflation and central bank currency risk is a legitimate use. One of the big rallies in bitcoin coincided very precisely with the Cyprus collapse where the government simply confiscated a percentage of everyone's money in the banks.. and in places like Venezuela bitcoin is literally a life saver. So remittances may be the biggest market, but hedging against incompetent government is not an illegitimate use of it... and I would separate that from "speculation" as a use case. Speculation tends to get a bad rap, but remember, speculators sell when prices are high and buy when prices are low-- they tend to moderate prices.