Like the others have said, better safe than sorry.
You can also splash boiling water on yourself without a serious burn. Some people have more oils in their skin than others.
In practice, though, you want to be safe in case of a catastrophic failure of your container or something unforseeable... like an Earthquake.
Plenty of people do extractions without gloves or goggles. People also drive without seat belts or ride motorcycles without helmets.
For people who are really concerned about lye, there ARE less caustic bases you can use. Lime works. Potassium Hydroxide as well. Both of those could burn you as well, though.
I posted a
thread a while back where I showed that TSP (trisodium phosphate) can be used as the base. TSP might make your hands slippery but it is much safer than lye, and easier to neutralize by a huge degree. It is nowhere near as basic as Sodium Hydroxide, and it takes a lot of TSP to get your solution black, but TSP is actually safe enough that it has been used internally (not that I would recommend this). Truthfully even lye is often used internally... it is an ingredient in pretzels and other baked goods with that type of leathery brown skin.
"Curiouser and curiouser..." ~ Alice
"Do not believe in anything simply because you have heard it. Do not believe in anything simply because it is spoken and rumored by many. Do not believe in anything simply because it is found written in your religious books. Do not believe in anything merely on the authority of your teachers and elders. Do not believe in traditions because they have been handed down for many generations. But after observation and analysis, when you find that anything agrees with reason and is conducive to the good and benefit of one and all, then accept it and live up to it." ~ Buddha