Yes crypto and blockchain aren’t going away, that doesn’t mean any of them, whether it is Bitcoin or Ether, will have any value in 10 years. I wouldn’t be surprised if both are close to zero, I also wouldn’t be surprised if both were significantly higher.
If you believe significantly higher, it’s a bet that others will bid it up, neither actually produces something tangible. It’s speculation rather than investing IMO. Nothing wrong with that of course.