There are many things most likely to consider whenever you're investing money in crypto..
These are:
1. Volatility of the Market.
2. They don't have the knowledge about crypto.
3. Negative news that they see or hear in social media/TV Media.
4. They were scammed and afraid to invest again.
5. Threats of hackers in the internet.
But users can also protect their computer from hackers by using:
1. Virtual Private Network for Internet Protocol
2. MetaMask Wallet
3. Not saving any private keys in your PC.
Those who do not understand about crypto and they just think will make a big deal out of cyptos, but 95% of them have lost. blockchain bc is still quite new, it looks like www. or email the early 90's .
It is still a great opportunity for everyone.