Age in the Peace Corps

I've been thinking about the age in which one enters the Peace Corps. I entered as a 25 year old and will exit as a 27 year old. It was the right time for me. I had finished undergrad and felt lost, to put it bluntly. I needed a couple years to scratch my head and be confused. So by the time I applied and was shipped off, I was 25.

Questions:
Is there a right or wrong age to serve in the Peace Corps?
Does an older age signify that stronger relationships have been formed, leading to stronger commitments, leading to a stronger chance of wanting to go 'home'?
Is there such a thing as being too qualified for the Peace Corps? Does have a graduate degree make you more likely to get less out of the experience?
Can you grow too old to make a fool of yourself? Can you be too young to truly let go and let flow?

I have no answers to these questions and rightly so, because I don't think there are black and white answers. It just falls into the category of pondering about ages for other life events: marriage, college, kids, buying a house, moving to a new place alone, changing careers…is there a right or wrong time in your life for these events? How much bigger will the learning curve be at different points? What would have been the perfect preparation?

There's your food for thought today.