I rarely burned out a glow plug, if I did that glow plug was probably 5 years old or more. The fuel smells like perfume and gas stinks. I love tinkering on engines, I rarely have to take it apart, but relish the work when I do. If you use pump gas the engine go to s@#$. So you have to pay more and it costs $5 mixed. Only a buck or two more to mix glow and a lot more power and no stink.
I have never had a gas engines, but I have more trouble with my gas edgers, trimmers, and blowers than I ever have with my glow engines so I do not care to try one.
Go to the gas forum if you are going to dis glow engines, you won't find many on your side here.