Educating your friends about Bitcoin is a good thing, and you are doing a good job by giving in-depth knowledge about Bitcoin. I think you should not get involved in a thing if it is illegal in your country, and should not encourage your friend to invest. I am sure your friends are from a good educational background, and it is important for them to try and get a job in their respective field to get more success; they can do forum posting or bitcoin investment as a part-time option. Bitcoin investment cannot guarantee a good ROI if you are not holding for the long term, and your friend's problem is to get money in the short term to fight unemployment. Encourage them to get a minimal-paying job or an internship in the field and learn some skills because they can do wonders in their respective fields. Who knows?  
If you are asking them to invest money in Bitcoin, don't do this because if they lose their money -by any chance- they will blame you for their loss, so let them do whatever they want to do with their money.