why is it scary ?

"Fear is the path to the dark side. Fear leads to anger. Anger leads to hate. Hate leads to suffering."
Yoda.

Here's a tip, when you start going down the rabbit hole, you only put in an amount you're willing to let go.

"Oh I lost RM100, oh well"

You keep doing this every week/month while tracking your cost, if the price dives, you just watch only, don't do anything, it'll always return as long as the system isn't in danger.

If it rises significantly, like say +50%, you take profit and earn back your cost. Then you resume the buying schedule.

I've been doing this since August 2015 and I've never lost anything at all, just regret didn't save more whenever I can.

Be sure to safeguard your coins, if you don't want to spend money on hardware wallets, then you need to learn how to setup a paper wallet.