I am 23. Location doesn't matter because I am military and I am constantly moving and traveling the world. The more contacts I have in different areas the better because when I am in that region of the world I can link up with them. Its an amazing concept really.
You're jumping to all kinds of conclusions.
Before you go backpacking, you need to know what the conditions are like where you're going - because the gear needed can be widely different, depending. If you say summer in the Sierra Nevada, it's a different set of clothing and different sleeping pad and bag than if you say summer in Florida, the Appalachians, Canada....
That is what is meant by where you are going. Just saying you want to go backpacking doesn't help us help you at all.
Military rucking IS very different than the backpacking we all do. I've gone backpacking with folks who brought their military gear - it's a lot heavier, very durable, bombproof, and is quickly replaced by civilian gear that functions better in our environment (in my case, California, Sierra Nevada, which is cold at night but very dry in general).
I've had people from all over hike with me via my meetup groups. If you travel that much, joining meetup and then joining groups in the areas you are traveling to next will help you prepare for backpacking in that region.