I've been resisting joining in on this one as I often get myself on trouble!
Let's look at the facts:
It is bad practice to wear gloves while using woodworking machinery.
I'd say for 99% of the time there is no reason to, and certainly a beginner should not be wearing them.
However, I have occasionally worn gloves for turning. If you have ever made a batch of 8" diameter laminated oak table legs you will know that, without gloves, both hands will end up lacerated and full of splinters. I'd imagine the same is the case if roughing a large amount of large bowls and/or logs.
When wearing gloves I am fully aware of the potential dangers, and take the calculated risk of wearing them rather than suffering with painful hands for the next few days.
I would just emphasise that I would not recommend or teach the wearing of gloves to the inexperienced but feel comfortable taking the measures risk myself when needed - which is not very often I must say!
Richard