One thing that isn't accounted for when considering the failure rate of stock vs. solid state ignitions is the time frame.
By their very design, points type ignitions either wear out from use or need to be replaced due to age and lack of use (like on a bike that's been sitting for years or decades). Every one of the old, neglected bikes I've brought back to life has needed new points and condensers to get running properly, and I'm sure everybody else here has had to do the same for their bikes. While not an indication of poor design of the stock ignition, that's still a failure.
Like brakes, control cables, chains, sprockets, etc, points/condensers are a maintenance item that are designed to be replaced on a regular basis as they get old and/or wear. Saying the stock breaker points ignition on your bike has never failed is like saying your drive chain and sprockets have never failed. But in reality, the reason they have never failed is because they are checked, adjusted and replaced before they get to the point where they will inevitably fail. Is anybody here actually still running the original points and condensers that their bike left the factory with, or even still running the replacement points/condensers that were on their bike when they bought it from the previous owner, and if so, how many miles are on them?
Solid state ignition systems are designed to be used long-term, and because of this any need for replacement, even after decades of use and 50K+ miles is considered a failure, even if that one part may have been used for the same amount of time that would have required multiple replacements of a stock-type ignition system.
I know that a long-term failure of a solid state ignition is not what gave rise to this poll and discussion, but it's still something that should be considered when comparing two fundamentally different types of ignitions.