Perhaps one of the biggest reasons for buying a leather arm chair is that it not only looks good but it typically last much longer and doesn't need much maintenance or cleaning as other types of furniture.
However the decision on whether to buy an arm chair for yourself depends on whether or not you'll be using the chair and a business or personal setting. If you'll be buying the chair for a business purpose, then there are certain factors that you'll definitely want to include in your buying decision. On the other hand, if you'll be using the leather arm chair in the den of your home, then modern-day office ergonomic concerns will likely not play and important part in your buying decision.
So the first consideration you want to undertake is the use to which the arm chair you'd like will be put. If it is to be used in an office setting, then you'll want to make sure that it's engineered with human factors in mind that promote good posture and support in an office environment.
On the other hand if the purchase is strictly for home use you may be more interested in making sure that your purchase matches the home decor that is already prevalent in your living space. If that's the case your purchase decision may hinge primarily upon things like color coordination, aesthetic design, placement issues and the like.
Typically however for both office and home use you can hardly go wrong by purchasing an arm chair. Of course this type of arm chair will be more expensive than a regular imitation leather arm chair. But consider the lack of maintenance, easy to clean material, and the well-documented longevity of leather as opposed to other furniture covering materials and, it's obvious, a leather arm chair is hard to beat.
Leather does have its drawbacks however. It could retain a temperature that is well above or below the ambient temperature of a given room for example. This could make it uncomfortable to sit on initially. But the user's body temperature quickly adjusts to the temperature disparity.
Of course it goes without saying that other types of materials are not as durable as leather but as the old saying goes you often times pay for what you get. It's no secret that leather shoes can easily outwear cloth or rubber-based shoes. And the same can be said for leather covered arm chairs. Therefore cost should not be the most important deciding factor when considering whether not to purchase an expensive leather arm chair.
Perhaps the most important thing to keep in mind when deciding whether or which type of arm chair you should purchase, is to sit in it and see if it feels comfortable to you. Use that as your primary guide and you'll likely make a wise choice you'll be happy with.