I think bitcoin is really a good investment for now, but I don't think it is a good idea to put all your investment in bitcoin or crypto currencies since it is unpredictable and very risky to take. For me it's still better to start your own business than depend your future in bitcoin investment.
I am totally agree with you that Investment in BTC is very good investment, But it bears a risk. So, we should invest up to the level what we are able to bear the losses. We should not invest whole of our saving, Because it will hamper our daily life.
What do you think guys?
I think We may consider the investment as a second earning source as you says.