Well, about the Safe-travel bags and such. I'm always in two minds about that.
Especially in the South Americas, thieves are getting desperate: I know the story of a friend of a friend of mine who travelled there with a sturdy bag......the thieves got at her with a knife to slash the bag....that didn't work and she ended up in hospital as she was cut up.
When traveling in Central-Asia, China, Iran or other countries that don't have many ATM's or money change facilities: I take cash with me for the whole of the journey and will have two pockets on the front of my trousers. In the one I stash all money and in the other one my passport, the flap secured with velcro and a safety pin inside. I will not ever defend my backpack or bag with my life.......not even for my iPad that goes where I go.
As I often travel alone, I will not go near a bank or ATM; as not to get into trouble. And I always keep small change in my pocket, for the market/tips and such.
When traveling in Europe, it depends on the country. Obviously most countries are safe if one proceeds with the normal caution.
At one time I cruised the USA for a month from one cheap lodging (with coupons) to the next....nothing happened. The traffic was more disciplined and less crowded than in my own country. But the day after I got back home, I did some shopping on my bike and when I left the store, my bike was stolen.....
In my cup: hot Rooibos papaya.