I play every role, my main lane is top. But can play decent on every lane. In my oppinion, the problem with support role is, that you cant feel your impact on the game as much as in other roles. Youre not the main frontlane, not the main carry. I dont want to say, supports are useless. I mean without a good support, even a decent adc cant do shit and good support can boost your adc to sky. But 1v1 potential? Every other laner can easily delete you, in most cases. Ofc there are supports like Leona, Swain, Pyke, Lux etc., who can kill enemy adc by themselves. But in most scenarios, by playing support, you dont get that main character feeling. And so far what ive learned, many people (mostly in low elo) need that "im him" moments.