Thanks for your replies.
I want to give my opinion here.
I think a good way to circumvent this problem is to not to limit the amount of BTC to 21M. Instead it should have a deterministic inflation rate of let's say 1%. This would have 2 benefits:
First the concept of mining as it works today could go on for ever. Secondly, deflationary forces such as loss of BTC, could be compensated for.
I general inflation as it is today is not a good thing cuz it takes monex from the savers to the speculaters, but if the inflation rate is small and deterministic it would be a good compromise.
What do you think of that?
History shows that flexible inflation rates have a nasty habit of changing regularly. This is generally done for the benefit of one group and at the expense of another. Bitcoin has a model and that model should be adhered to. There are altchains available with different philosophies at their cores, if one of those is seen as superior then free market forces should cause it to rise to prominence.