Well it's a pretty old discussion really! Bitcoin is meant to be a currency system as per its creator/creatots. However, due to the highly volatile price and great upward momentum, it has become an investment asset to many. While it is not something that we don't expect but its main use is a currency. It is something we can use to transact without the need of an intermediary.
Also, the slower confirmation time and high fees, have made bitcoin less attractive as a currency than an investment. But that's what the market dynamics are. We are happy as long people recognizes bitcoin.