I know about investing in bitcoins and I know that there are risks involved, I am investing in the potential to grow money but I want to invest in bitcoins with the understanding that my money may go down due to market volatility.
As long as you understand how BTC truly works and you know all the risks involved then you can make your choices accordingly. Investment for the future is always a very good plan. I don't know what country you live in but since you've been saving that money for a very long time I'm sure it must have been affected by inflation.
You said you understand the risk but I'm still going to stress it, it's not going to be easy seeing your life savings going down. This can happen during a dip. Hopefully, this doesn't happen for a very long time because I'm very optimistic about Bitcoin for next year.
I'm more focused on where you decide to hold this money and your security.
Since you're holding for a long time and you're not a trader, please don't keep that money in a custodial wallet.
Save your money in a non-custodial wallet where you have the keys and the wallet is controlled by you.
Also, this is your life savings we're talking about, so please take conscious steps to take your security very seriously. Don't be lazy, it's better to take that extra caution and seem paranoid than lose a whole lot of money.
We're approaching a very bullish time in Bitcoin (hopefully), and there are going to be different forms of scams flying around in the name of investments. They're going to be very enticing and juicy offers, please don't fall for them. Research has shown that there are more crypto scams during a bull run so please don't fall for any of them.