I would advise you not to do that. Or at least now with your all savings. There are many people who lost their money thinking that way, that BTC will in the end always rise. Anything might happen and the price of Bitcoin might go south. So if you want to invest in cryptocurrencies consider all risks that these investments involve. Perhaps you find out that it will be better to invest only a portion of your savings. I know that money in a bank account which you will not touch are kinda useless, but at least they are there.
That's true. If you are already secure with your insurance for your future, I think it is not advisable anymore to withdraw those and invest in Bitcoin. Insurance is the security of your future, don't touch it.
If you want to invest in bitcoin and you can produce money from other sources I think that is much better. Consider your Bitcoin investment as an extra insurance, if it fails, fine, and if Bitcoin succeed, then that's better for your future.