Before diving into the relative merits of nitrile gloves, let us take a quick look at what nitrile is. Nitrile is a form of synthetic rubber which has certain unusual properties. Without getting bogged down with the chemistry, the key properties and distinctions that are relevant here are its resistance to oils and chemicals as well as its resilience.
With that titbit about nitrile gloves in place, it becomes very easy to see why it is a favored material for use in making gloves. As a doctor who is habitually going to be exposed to dangers both from the patient (blood-borne pathogens) or from his own tools like scalpels, having the right gloves is of paramount importance for long-term safety. For such professionals who work with sharp implements (surgeons, tattoo artists etc), the extra resilience to being punctured makes nitrile gloves a godsend. Compared to latex, which is also commonly used for making gloves, nitrile gloves are much more puncture resilient when using steel puncture probes to test the resilience.
Since latex allergies are becoming more and more common, and since there is the danger that people with allergies to latex may be unaware of it until contact occurs, there is a need to have gloves made of a different material. Furthermore, since it is possible for people to develop allergies to substances that they have had exposure to in the past, nitrile gloves without any latex content make for an excellent substitute for making gloves, even if the organization uses predominantly latex gloves. The consequences of latex allergies range from skin reactions like hives to breathing issues like sneezing and a runny nose. In extremely severe cases, latex allergies may present with anaphylaxis which is potentially life-threatening. Needless to say, none of these is permissible when donning safety equipment like gloves which are supposed to protect you. Having nitrile gloves on hand allows for rapid responses to such unfortunate incidents or allows you to avoid them all together.
Of course, an excellent case can be made for using nitrile gloves instead of latex gloves. In addition to the puncture resilience that was discussed, its resistance to chemicals makes it ideal for professionals whose job involves handling petroleum or hazardous chemicals. The added protection could be the difference between a close call and a career ending injury! The primary concern when choosing gloves and other safety equipment is how well they would perform in emergencies. While most of the time, the difference between nitrile gloves and others (like latex) is going to be academic, the rare circumstance of an accident is when the differences become apparent. In times of crisis, you want to be focused on evaluating and responding to what is happening without fussing about with your gloves. The quality of nitrile gloves allows the wearer to have that peace of mind and safety.
Finally, nitrile gloves are waterproof and this makes them useful for reasons of convenience as well. Waterproof gloves can serve excellently even for mundane tasks in and around the house. And if at all there is the need for greater protection, you will be glad to know your hands are safe!