egg-zactly. The words "knee-jerk reaction" come to mind, don't they?
"...and neither should you". That's a rather arrogant and patronizing thing to say.
I repeat what I said - fly using a rubber cord engine if you want. Just be aware that it not only might but WILL quit on you one day if you fly enough. This goes for all single engine aircraft - don't ever put yourself in a situation where you can't accept the consequences of your engine suddenly emitting that infamous deafening silence. Heck, most light twins are barely single engine capable and really demand a pilot who knows what he or she is doing if an engine goes out. It can be argued that light twins are less safe than single engine aircraft. You're twice as likely to have an engine quit, and if you won't make it on one engine... the odds are stacked against you.
That being said, an automotive engine is
far more likely to quit on you. You should consider this when determining the risk you're prepared to take. The old probability of an event vs. the consequences of the event judgement call.
OTOH, I've read some accident reports where people have flown with so poorly maintained engines that the reliability was far less than that of my old VW Golf. Most G/A engines are 60's designs at best and need to be properly maintained if you are to have the extra reliability. I'd say that a poorly maintained modern auto engine will most likely beat a poorly maintained G/A engine...
I thought I was doing good trying to avoid those airport hotels... and look at me now.