Bubble's make BTC look bad.
it scares people away, who wants to invest time/money in something that will collapse massively at a certain point.
Steady growth is best, even if it takes ages.
I don't agree that it scares people. At this moment, bitcoin is used by most people only for speculation purpose, and what will attract new investors, is another bubble. Now they're looking on a price chart and see "whoooa, if i'd buy it x years ago, i'd be rich. I cannot miss next bubble"
![Wink](https://bitcointalk.org/Smileys/default/wink.gif)
I think if price would still keep steady growing, many investors who now just looking from time-to-time on btc price, will buy it, believing that it's preparation for another bubble. And that's how another bubble will start.