You would be correct. Anything that is man made, and mechanical, can and will fail. In my 25,000 plus hours of flying, never had an engine quit. I had a VW engine in my car that swallowed a valve...that was catastrophic. But it was my fault due to improper valve adjusting. Also, had another VW engine quit. It again was my fault due to lack of oil. In off field emergency landings, Titan recommends to "belly in", leaving the gear retracted. This plane has a strong tendency to flip over on it's back on rough fields. The crash photo below was non-fatal, and was the result of engine failure (Honda).