Its wise to put all my wife life savings into cryptocurrency ?

NO, Never Do That!

It's like throwing your lifetime if you invest / gamble all your wife life saving in cryptocurrency.

I will give better calculation. Only use MAX 30% from all of your cold money (i mean, the money that you can lose it all without hesitation or without feeling sad).

Then, please diversify your investment portfolio as shown below.

Note :

- BTC is a must because it can be your life saviour and i am sure it will go high again (for long term investment).

- For the other Altcoins (WAVES, ETH, XRP, STRAT, NEO, XMR, STEEM), you can change to whatever you want, but make your you already did a research.

- Dont trade if you are not ready, you can lose anything you have in no time. But, focus on long term investment.