If more people join in bitcoin environment in order to trade bitcoin for profit, it may cause volatility in the market.
If people really believe in bitcoin to store the value and use it as medium of exchange, the price will constantly increasing.
Indeed, bitcoin isn't all of those but consider it as an alternative currency which still on development to gain more value and stability.
We can't say bitcoin price will reach certain price tomorrow or next week, moreover for a month or years, but we just speculate based on our predictions due to current market situation, it may not precise but at least almost true.
Having more people in this bitcoin ecosystem is always better, but the idea is different. Some people are trying to manipulate the other holders by saying incaccurate things.
People should determine the bitcoin on their own, not depending on others.