Food for thought for anyone saying the bitcoin price is too high at the moment for buying in:

Just because the value of bitcoin has grown a lot since it was released, it doesn't mean it won't grow further.

Take a look at this chart of Warren Buffett's Berkshire Hathaway company:
http://static2.businessinsider.com/image/54f4ada4ecad04a2477c881b-1200-924/value-bar-log-final.png
This chart shows the current value if you invested 1000$ in Berkshire Hathaway stock, sorted by which year you bought it.

The people who are now saying bitcoin is too expensive, and don't believe in further growth, are the same type of people who didn't invest in the Berkshire stock in the 70's, 80's and 90's.
Because they believed it couldn't grow any further because of the already insane growth. Do you think they regret that decision today? You bet.

In my opinion, you need to look at bitcoin as a long-term investment. You also need to be willing to take a risk.
That being said, you should obviously never invest money you can't lose, as there are no guarantees in this game.

Personally I rather buy bitcoins, instead of buying that takeaway pizza, or waste money on other similar things.
I'll rather be that guy who invested in something I believe in and lost, instead of that guy who regrets that they didn't invest in something they believed in, because they were too greedy/rather wanted that pizza instead.

Also, never put all your eggs in one basket. Diversify.