All you need to do is invest now and wait a few years longer.
Every time is the right time to invest in Bitcoin.
We are on an exponentially growing curve (though it might not keep up its current speed) for another 10 years at least.
That is the beauty of Bitcoin.
But there are also some people in the forums here who write their concerns. Both.. positive and negative bitcoin critism makes sence to me at the moment. That is the real problem I have.
1. If big players go out of the game (they call them bulls or so?), then bitcoin rate will get a major hit if I do understand it right. Because they move a lot of money out. Would other big people fill the place so that there is a second chance for a bigger rate again?
2. What if country pull the plug? I mean forbit bigger companys to accept bitcoins... bitcoin would remain underground currency? Maybe pretty worthless later on?
3. Attention: Conspiracy! What if this game here is created by exact the same people who milked our dollars and euros away? Maybe they pump in so much money so that all people even me become greedy and want to play the game too. And later they pull out everything = profit while we just got ripped?
4. Security... what if there is a security bug or issue?
5. Bitcoins are not phisically.. they exist only in our brains...
Thats the negative stuff I did read so far.
I do think there are some more concerns you could think out or which some people mentioned here. It´s basicaly just what I did read here. But on the other side positive critism makes sense too... the amount of bitcoins are limited. There is no inflation... it´s rather deflation which should mean that the value should increase... yes that sounds sexy if it is true.