The last point is actually very important, after all the years of hodling and waiting to enjoy the benefits of your hard work you end up falling for a Bitcoin scam...a lot of people have fallen for this due to several reasons and one of those reason is lacking adequate knowledge about Bitcoin, investing doesnt meant that you should not have any knowledge about Bitcoin, learn to ask questions when you are confused
One other thing that is causing this is they want to earn big whereby they wouldn't know which is really, they can keep holding for years but when scammers shoot in they wouldn't know that is a scam attempt that is why it's good to always join a like-minded people around you to share common knowledge and ideas together to know when such attempts is approaching or are wanting to come near you.
Investment involves being wise and becoming smart in everything they are doing to avoid being scammed.