It seems to me that EOS should be kept for a very long time, though the development is slow and he did not become the killer of Ethereum as promised. But the prospect of the project is very big and therefore it makes sense to keep it for years.
eos growth is in a long time. we know that in the near future the eos platform has also developed far better and faster than the etheruem growth when it appeared. all need a project, eos travel is still very long.