Item's shouldn't make a class.

How come Support's are the only class where the majority of their problem's are caused not by the champions but the items? And how come support's are the only class where they're forced to buy specific items, not to mention these champions don't have much in their kits and playstyles that allow for Playmaking, Skill Expression ect.
How come the Item's are what make the Support not the other way around? I honestly don't think it's the fault of the Item's, Gold Income, Stats ect that make Support a pain to play for most players but the champion pool itself.
Items shouldn't make champions that's all.
Edit: Just so people don't get me wrong, yes there are supports that have plenty of Skill Expression and Playmaking Potential but most of them don't, it was only recently (Namely since Thresh's Release) where we started getting support champions that were good because of their kits not because of the items they buy. The champion you pick should be more important than the items you get.
A juggernaut without
A mage without
An assassin without 
is considered a support item but people like

are able to make use of it.
used to be a item only for aa champs, now is a must rush if your lane has a sustain to it. items will go through changes to shake up play styles and comps. its all how you itemize for your lane. Why is it that brand, teemo and fiddlesticks abuse
? because its a strong item for their class style/ play. the items force a play style not a champion.
,
,
,
; the item is able to work well with their spells and thus rushing it can win their lane.
and