FEL, you seem to be a young and at times slightly naive fella, so... Fuck, I don't know, don't you have a party to go to right now?

Anyways, don't let fancy pictures fool you. An engine is most primarily a tool for you as a developer. What other developers can get out of it might not be what you can get out of it. To make an analogy, people can do the most amazing things with a CNC saw, all I can do with it, if I'm lucky, is cut my fingers off. That is to say, an engine is a tool, it's not the magic pill that makes your game great.

That being said, I do encourage you to switch to something modern and supported. But I would encourage you to look at the tool and not the techdemos behind it. See how it fits for you. Of course you can't learn all engines to a sufficient degree, but take 'em for a spin and see what seems to be able to help you! Because that is the point of a tool, it's there to assist you and build an underlying foundation that you can use to excel your games. If it produces fancy pictures in someone elses techdemo but holds you back in creating your game, it's rubbish.