Blender VS Unreal Engine

I have decided to move away from blender and create my 3D model using Unreal Engine4 (UE4) because in Blender I have issues with walking around the space; any glass panels used for windows ect don't render properly and create transparent walls when they are actually solid. Unreal Engine comes with textures too so I no longer would have to worry about downloading and storing the files in exactly the same place. Applying textures is far easier in UE4 than it is in blender too because in UE4 you can just drag and drop the texture onto an objects face where as in blender you have to select the object find the texture, apply it, UV unwrap it and hope you don't lose/move/delete the texture file.