If you want to save long-term, then invest in mutual funds or real estate or whatever you want, but don't sit on your currency.
Or... I can invest in Bitcoin, which doesn't tell me what to do. That's what it was created for, remember? We are supposed to be in control, and not have our wealth stolen through inflation or other trickery. If you are in doubt of this, go read the genesis block.
A currency that is just like the USD is not interesting and I won't use it, no matter what your theories say.
Bye.