The banking system is set up to make money, it's an intermediary! The bank takes money to earn it, and gives us a small interest! bitcoin and the whole crypto system gave the opportunity - we ourselves to invest and earn good money! now banks themselves are investing large amounts of bitcoin!

If you have iron nerves and steel eggs, then of course invest in bitcoin, otherwise - do not risk your health))

Banks can never give you the type of interest bitcoin or any altcoin can give you. Bitcoin is a cryptocurrency where you can invest few dollars today and you become a millionaire overnight. No bank does that. I believe with this few point of mine, you will agree with me that investing in Bitcoin is better than investing in banks

Yes, I choose both for me bank investment and bitcoin investment. Bitcoin investment you can earn here more profit but this kind of investment have full risk  but you earn more profit. My investment in bank is came my profit in bitcoin I know it is small profit I can get. This two kind of investment is very helpful for me cause it's gives both profit .

You can not call it an investment if you keep your money in the bank. Bank only has one job to do and that is to keep your money save, not to grow it bigger. Bank gives you an interest as a thank you gift for trusting your money into their hand. But i don't want to lose all my money either, so i would rather invest half of my money into bitcoin and the other half stays in bank for emergency back up.

He probably don't know much about bitcoin , i think it's better if you try investing it in bitcoin cause in bank you won't get anything even for long time and it's your money anyways you earned it it's your choice   

Before any investment one needs to consider d interest rate an investment will generates. How much will a bank pay you per year? 3%? Bitcoin has jumped 10% in 2 days.
The second one is the matter of safety. Is BTC safer than your bank? I'd say that it is. It can't be taken from you by your government. Read what they did In Greece or Cyprus. You won't have to depend on them processing your transactions, it will happen automatically within minutes. In case of a crisis, a war or an epidemic you will have the money in your pocket and won't have to take part in so called bank runs. 

Discuss with him both the riskreward of bitcoins and bank and let him understand your point of investing in bitcoins rather than bank. To convince him more, tell him you will diversify with 50 percent into bitcoins and remainder into bank.

I think At this point make someone who has never heard it believe in bitcoin and its growth is really boring.
And Even people who have become technology-related professions have also known a lot about bitcoin hesitantly to make an investment into bitcoin worrying about the market.

If you have such a huge amount in your accounts then it is best you invest into bitcoin or any other promising ICO and you will reap of its benefits in multiple folds. Bitcoin investmtent is the best banks only give you few amounts.