Why? Because we can and we always do things our independent way lol.

EU uses motorgliders because GA aviation is only for the very rich over there and your not gonna find any tom-dick-harry with a light plane, only clubs, rick guys and partnerships.

Here in North America for $150 bucks or a bbq lunch for a friend with a plane, a guy can spend an hour up in the air scouting fields and simulating off field approaches. It being a motor glider is not essential.