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.
In this case, we can compare the transaction of investment in cryptocurrency and stock market,
Cryptocurrencies unlike the stock market is very flexible, no one can actually tell the price if it is going to go down or now. It is basically depends on the project's development. In the stock market, there is already companies that is well built and predictable to succeed. Therefore, my main point is that, investors are still afraid to risk money in cryptocurrencies. In addition, Scam are also a factor with this.