Monero in particular absolutely terrifies governments and financial institutions - you can tell because it's been banned and delisted practically everywhere. This gives me great confidence in it. Not as a speculative asset, but as a means of having truly private transactions.
In a way Monero is more a cryptocurrency than Bitcoin. A fast, cheap, global, and private currency; in contrast to the speculative asset that is Bitcoin.
The fast-cheap-private part may or may not be fixed at some point, especially the fast-cheap, or other currencies may help with it.