Re: Serious question about Bitcoin. Is it a reliable and stable investment?
I think it would be wiser to, per avikz's suggestion....invest the funds into a Portfolio Management Service. I'll have them look into that direction instead. Meanwhile I'll continue to HODL my 0.5 BTC and hope for the best 
Considering that bitcoin is a high-risk investment and that they have no clue what they are doing investment-wise, it is better for them to hire a professional financial advisor. I am sure the advisor can give them better guidance in regards to risk management and choosing the right portfolio for long and short term investments.If you do your own analysis you can personally take the decision on your own investment
You never need to hire any advisor for crypto investment. There are plenty of scammers in this forum as well as outside their to scam you so don't be the victim on hiring someone.
Hope you can understand what I am saying.