What will the [Euro, USD, GBP, Gold, Silver, Apple Stock, Corn, Beef, Oil] be worth next week, in a year, in 2040?

It is a good question.  I kow you are specifically asking the investors among us I am not, at least not on a large scale.

I do know that you have to understand the market forces that affect BTC in order to make such a evaluation. 

The influx of new BTC has been halved.  New business, new ways to move BTC in and out of currencies are being derived.  It would be nice for someone with a financial analysts back ground to layout a model for evaluation.