I would never recommend investing your life savings in something as volatile as Bitcoins. You may fall asleep and wake up penniless unfortunately. Maybe in the future when we don't have bubble after bubble
I agree with Jozzaboy. You can invest some money but only what you can afford to lose. If you wouldn't gamble with that money, don't invest with it. Be careful, and if you want to put your life savings in it, wait until the price has become much more stable!