Im left Alone To Play League Help?

I have a group of roughly three other people who i played league of legends with, every day we would hop on and play for hours, but recently one of the guys has given up league while he has a levels to do and so its just me and two others, the problem is that i dont play ranked and the two others seem to just want to play ranked now as if im not there, whenever we are all in a skype call not long after the notion of playing a ranked game is mentioned im left sitting on skype being quiet because ranked is "serious" waiting for them to finish their game hoping that i can play a normal with them after, but it is never like that, i asked why they dont want to play normals hoping that they would catch on to the fact im feeling left out and frankly upset but they just plainly respond with its just not a challenge, even though the real challenge is what the hell do i do because im loosing my best friends!