You keep repeating the same thing, but you don't provide any explanation. I don't think you know what inflation does, but, unlike you, I'm actually going to explain why I think so.
Considering all other factors equal (we both know they aren't, but the argument is about inflation, nothing else), consider two scenarios:
1) have $10k now, don't spend them, don't invest them, in 10 years you still have the same $10k
2) have $10k now, buy something worth $10k now, in 10 years you still have this thing that cost $10k originally, but because of inflation (=increase in prices) it now costs $11k.
In scenario 1 you have less value than in scenario 2. Like I said, this disregards all other economic factors that affect value, but the idea is to show how inflation influences it.