I don't think bitcoin will be that high in value for a long time but i think that the bitcoin won't die anytime soon. So i think it is still save for you to invest in bitcoin.
But you should wait for the value to drop first so you will make sure you won't lose money.
I also think that like you, I see that for the price of 1 BTC will not be long up, but I believe bitcoin will last long. Because every day or every week there must be a join or invest in bitcoin.