Like you said, less handling means less chance of contamination. Thankfully you've been skilled (not lucky) in having no issues because you have been meticulous about cleanliness and sanitation, but that doesn't mean there's a 0% chance of contamination. In the same way, I could easily jump off a 10 foot high ledge a hundred times without hurting myself, but there's still a (slightly) larger chance of spraining my ankle if I jump instead of staying on the ground.
As for Snyder, where does he recommend the use of a secondary? I've never read any of his works, so I'm assuming it's in The Brewmaster's Bible which is the single item that comes up when searching Google. If so, that appears to be a 14 year old book, which is around the same time that John Palmer was suggesting the same usage of a secondary in How To Brew because of the weak yeast strains available at the time. Since then he's changed his stance on secondaries because of the widespread availability of liquid yeast and better strains of dry yeast, as has the majority of the homebrewing community.
If one is using a secondary for clarity purposes, the same results can be achieved through using irish moss/whirlfloc in the boil, letting the yeast finish cleaning up in primary for a few extra weeks, and cold crashing for a few days before bottling/kegging.
Nothing against you and your practices, beerme; like I said, you've never had a problem because you're cautious and skilled with your process. But as this is the beginnings forum, it's probably best not to throw secondaries into the mix until beginners are more comfortable with the process and sanitation, especially when it's unnecessary for making great beer.