Investing in Bitcoin is not risk free especially to investors who do not invest appropriately with the right approach and strategy, and also not sticking to their investment plans (long-term).
I disagree with your statement partly because long term investing is not risk free. Investing in Bitcoin or other coins certainly involves risk. If you are a professional investor then you are used to taking risks as the price of any currency is not always the same and fluctuates constantly.
Also, Investments are tougher in other assets I've known, but with Bitcoin and a few other altcoins, they are cheap, which is an advantage. With a little learning, one can start managerially, which is why I encourage everyone to always go for them and override the little risk involved with a bold mind and the right managerial calculations.
Investments are never cheap anywhere so you don't have to confuse us in this. Every investment require money that is proportional to our financial capabilities and depends on the type and scale of the investment. What you can say is that investing in Bitcoin is something easy to start and maintain. You don't need too many things and no rigorous processes and paper or technical work needed.
Now saying that investment in altcoins is an option is what I will not agree with you on because buying altcoins is not an investment for me, you are simply gambling with your money. How can you call something that can die anytime, without notice, investment? Maybe you have not really suffered real lose from investing in altcoins. If I show you my wallet to see how miserable shitcoins I bought with my money have become, you will not bring altcoins to a decent discussion such as we are having here. So, let the discussion be focused on Bitcoin alone so we don't get too distracted.
Our target is to build a good Bitcoin portfolio that we can look in the future and feel accomplished that we took our finances seriously.