OK, question was about the role of bitcoin from the personal point of view. Somebody prefers to keep this asset, another is interesting in circulation, exchanging and spending.
Yes, because that's the point. No one gets to tell you what Bitcoin is "officially" for. If you think it's a currency, then go use it as a currency. If you think it's an investment, then go use it as an investment. Etc. Freedom at its best.