People will save what they want to save, but they will eventually spend their Bitcoin. We all need to have a place to live, food on the table, and clothes on our back.
We won't just hoard Bitcoin and never spend it. If nothing else, we will get bored, and spend some on an experience just to get some novelty in our lives.
The point is, all of those important goods will continue to get less expensive. And the folks who work, and provide valuable goods and services will earn less money on each job but their money will have more purchasing power over time.