User blog comment:Texas Snyper/Elo Hell and You: Part 2 - Skills That Pay the Bills/@comment-4431813-20110913215827/@comment-3360527-20110913232714

It depends. Like I said in my post, support is a force multiplier. It takes what your team has and amplifies it. A mage or AD champ just adds to the team's forces. 3 damage dealing champs + 1 support usually will beat 4 damage dealing champs under normal circumstances. But that's with all things being equal. If your forces aren't all that strong then a support isn't going to be very benefitial.

Long story short, no it is not always needed.