But the point is to give people choices.
Some people do indeed prefer deflationary currencies, and that's OK.
The point of a small limited inflation is to encourage a healthy flow of capital into services, workers, and development of activities.
And those of us who prefer deflationary ones should be free to use those as well.
I don't get why the mere existence of alternatives pisses off economists and the like so much.
If inflationary currencies are so great, then that's fine, feel free to go use those, and those of us that disagree will choose something else.
And the majority chose inflationary monetary systems.
Each of us is free to offer to pay for goods and services with, say, for example, gold, and each of us is free to ask you trade your gold for legal tender and give us that instead - yeah, the one the tax agency accepts.
The only thing stopping deflationary currency from being used by most people is that most people are too busy surfing / skiing / rock climbing / recovering from a hang over / what have you to care much about how monetary value is exchanged. People, on the whole, only seem to really care about convenience. And more specifically, the more convenient it is to spend money, your own or credit, the better.