I am learning DX11 instead of moving to another engine. Just a matter of fun.
A couple of weeks ago, I wrote a basic dx11 renderer, aswell
Though, for more visually demanding applications I'd still go for an engine like Unreal, simply because it has some advanced features that would take too much time to write myself (temporal AA, texture streaming, GI, light baking, sophisticated tools, etc. all with pretty good optimizations)
