It's less about the safety net and more about re-entering your career at a similar level. In Germany you'd be hard pressed to explain why you took two years off of your career and now want to come back.

Re Europeans traveling around Asia - Europeans tend to graduate university later than Americans and then embark on one or more internships before diving into their work contracts. It's not uncommon to take a break between those transitional periods to travel for a bit. But it is uncommon to leave your permanent contract to travel Asia for two years.