People would say the investments are best for them because they know what to do and what to expect from that particular investment, same as stock trading. It depends on that person.
I personally don't really care about that because at the end of the day, all the decisions I make are a result of what I've seen and felt over the few years I've been in this world.
For the risk issue, it is one of the risks that we must be aware that all the behaviours we do will ultimately not be free from risk, so I think the risk we have when we are in bitcoin is proportional to what we get.
I don't really care about other people's judgements whether saying bitcoin is good or right because in my opinion it would be nice if I focus on the choices I make and when I decide to jump into bitcoin then I must be prepared with all the consequences including the risks that I consider as a process and form of my journey in bitcoin.