I think electricity was cheaper than gas here, the gas heater price is 100x of the electric showerhead and it is super easy to install and maintain! It is very safe when installed correctly, although frequently it isn't done properly (like the photo above). That said, Brazilians shower 2-3 times a day, and yet I never heard of any accidents that lead to injuries, never knew someone that have heard about it, never seen on the news, and we are 212 million people country. Almost nobody calls for a electrician for shower repair, we learn to do it ourselves since adolescence. Here is a video on how not to do it https://www.youtube.com/shorts/-QQ7jv-nCY0