In fact, if these people really knew about bitcoin and the blockchain, they would find that bitcoin has been on an upward trend for a long time.
So it's obviously a good idea to hold bitcoin now.
Yes, People who felt bitcoin is going down have a target of profit to invest with having in mind the upward trend experinced by the last december 2018,traders still makes profit even went others felt its down or up.
No, I think it's not a good idea to invest in bitcoin this time.