Bitcoin currently functions decently as a store of value and as a medium of exchange, but what makes it quite bad in general is the price volatility. Currently, I personally think bitcoin is for speculating and for store-of-value for those 3rd world countries with economic crises(e.g. Venezuela) whereas their local fiat's inflation rate is through the roof. I'd take an 80% drop rather than a 200,000% drop due to hyperinflation.

Anyway, it's going to take time for bitcoin to be stable and find it's price. Though I don't have any proof, I'm quite sure currently stable precious metals like gold didn't find it's sort of "stable price" in 10 years. I'm pretty sure it took a lot longer than that. As with the transaction speed and fees, it's fine right now, but I don't think "fine" is good enough. Let's not focus on the present though, as technology moves forward anyway.