Gap years and independent travel are not without some level of risk; however the risk / reward balance can by weighted heavily in favour of reward, through effective planning and by learning some risk reduction skills.
What is striking is that we spend our childhood learning from our parents and teachers, our employers have a duty enshrined in law to train us for work; yet when it comes to travelling across a very unfamiliar world, many people set off with little or no guidance.
In the UK we consider risks in many different ways and put measures into place to reduce them.