1. Bitcoin will become so expensive that only the rich might be able to afford it.
2. Few people will adopt Bitcoin as a decentralised coin because many people will choose to invest in Bitcoin through third parties.
3. More countries will adopt Bitcoin as legal tender.
4. Bitcoin might become less volatile
5. The government will come up with more strict regulatory policies which might pose a threat to the decentralised nature of Bitcoin
6. Bitcoin mining will be mostly powered by renewable energy sources such as wind, solar hydro and geothermal.