Your right that people just care about the money side only but what I dont understand is what gives bitcoin that money value is it being decentralised.

If its not decentralised then its not worth any high money value correct?

If bitcoin becomes centralised then someone can increase the inflation supply from 21million to 21billion meaning at this point everyone in the world including babies can have 7 bitcoins each at least. How much will each bitcoin be worth then? 7cents?

So if bitcoin value becomes 7 pennies will people still care about money side or true decentralisation? When bitcoin reaches that low stage it is too late and impossible to change centralisation status back to original decentralised status.