We all have those champions we loved, be it our first, or maybe from our first penta kill.
Have you just forgotten about them? Why did you move on from them?
Like my first favorite was mordekaiser, but I hardly play him anymore, im not sure when the change happened but those times in ARAM when I play him feels like a part of me that came alive again even for that brief game. But im not too keen on playing him on the rift since I now feel more comfortable with other champions