Are you interested in BTC for the mere fact that the price has been going up since its inception and you think it will enable to make a huge profit or you are interested because you know that the technology behind BTC (blockchain) will change the way the financial world works?
Came for the profits, stayed for the technology. First I completely dismissed Bitcoin. Then its price increase made me re-evaluate my assumptions. And then I got utterly hooked on the technology and its ecosystem. Once I understood what Bitcoin was all about it was the first technology to excite me for years. So I got in. And now I'm here. Watching either one of mankind's greatest achievements or biggest flukes unfold.
I have to say though that the blockchain is one of the least interesting aspect of cryptocurrencies. Reaching decentralized consensus despite conflicting incentives is what makes it revolutionary. Stripping the consensus aspect apparently makes it easier to repackage and sell however, not sure if this way of thinking is going to lead anywhere useful though.