5000$ this year is possible but all of the outcome is depend on the august, many people is optimistic that bitcoin will become better and I believe the segwit is going to save bitcoin and bring bitcoin to its domination again, if everything work smoothly then 5000$ is not an impossible number
actually since beginning bitcoin invented there is always two sides ,
bitcoin could become the leading world payment system , or failed become nothing ,
so it's not a new thing that people keep speculating so wild about the price ,
what is more important for me is about how bitcoin could be adopted by a lot of people , not about price only.