Fenced windows and gates everywhere.

Fenced windows and gates have always been the norm in Mauritius, not only in new villas but also in private houses for people who could avoid them.

It's not only about security but also about privacy.

Mauritius is densely populated with houses inch close to each other in many areas, so gates serves as barriers.

Hi like you I had a gap before I saw the island again (though my gap was less at 11 years approx, I've now lived here since August 2016) but adding to Winstons comment the Island has also had its economic growth spurt and associated developments... In such a climate things get bought , electronics , cars, nicer things etc and buildings get built ... With it one could say elements of crime do tend to raise a little in such a climate ... However in my opinion it's nothing like in other countries... But having said that I wouldn't wish to go out and leave the house doors unlocked or the main gate open while out with no one at home. I think the mentality here is better safer than unnecessarily sorry. 🤔 Hope your eventual return to the island  goes well ...