BTC is useful as a temporary store of value.

Within 10 years it will not exist.

Guaranteed SHA-2 encryption will be broken.

BTC is currently not remotely close to top as technically advanced.

But it has first mover advantage. It should end 2018 still on top.

Not sure it will end 2019 on top. Lots of way better technology will leave BTC as myspace.com

EOS or DASH could be long term winners