Who suffers the most ?

Childhood is not always where one suffers.

Youngest. If the others fail, all hope is rested on them (family pride and to take care of the parents of course).

The oldest one has many more responsibilities to handle than the others. They also have to find their own way. The middle and younger siblings can just follow the eldest's path if they wanted. When you're the oldest, you have to be independent. It's a hard skill to learn.

Well personally as the middle one I had a difficult time keeping MINE in while you were getting me from behind. But I guess I couldn't call it suffering. I dunno, everyone got buttsex so I don't think anybody suffers.

You ARE talking about our gay threeway last week right?

The parents. Hands down.

What if there was four? OR SIX LIKE WITH MY FAMILY? Eh?

id say it differs from family to family my oldest brother was al ways given the most attention and every one elses crap got taken out on me lol

From my experience - the eldest, but we never had a middle.

The beginning is the hardest i think, not because i'm in that age group (only in age). but think about it. When you are younger, btw you should have specified what "younger" is. Whether it is in regard to age groups or maturity or life experience etc. But when you are younger you have to
-discover your self identity
-strggle with school and all the "lovely" things it offers
-learning things the hard way
-having your heart broken for the first time
-losing your virginity
-stuffing up your first kiss xD
and heaps of other stuff. Ya know.

Though, it is all about mindset.

The youngest suffers the most because they are physically and mentally at a disadvantage right from the outset. The oldest also get a lot more attention: the first step, the first word - the parents are in awe. When it's the second's turn, they've seen it all before while the firstborn's onto something new.
Having said that, middle children have it tough, too. They rarely get their spot in the sun as they benefit neither from the admiration of the first nor the indulgence of the youngest.

I'm the middle one and I suffer the most. I'm not sure how the oldest can suffer the most, they get their frustrations out by picking on the younger ones.

"Hey I got the super cool beanie baby as a birthday present!"
"Yeah but I wanted it more, and I'm the oldest, so I deserve it and that's why I'm taking it."

talkin about kids as in siblings?

I would say the middle one.
The oldest one is seen as the first born and the youngest is seen as the newest baby but where does that leave the middle one?