Ebonite Shaving Brushes are a relatively new. The first time it was used was likely in 2015 by the Paladin Brush Manufacturer and shortly after that by some other bespoke artisan brush makers. Though the material itself was first created back in the 1850's by Nelson Goodyear its initial common uses were for fountain pens, woodwind mouthpieces, tobacco pipes & hockey pucks!
10+ years is a conservative estimate but there are factors to consider. Some people collect vintage/antique shaving brushes that are still usable today. The main factor being how much use they had in their lifetime.
This CHOICE factor is an expression of your style, which is very much what "wet shaving" is about. There are so many factors that can determine what the "perfect" safety razor setup is for you. So being able to change it up is an essential step in finding your perfect setup.
Because we are all different, not only do we all have different skin and stubble, but we also have different shave habits. Some shave everyday, some once a week and some whenever they feel like it! All these reasons will change the optimum shave setup for you.
First challenge is to get your head around using an all metal, weighted razor with a single, sharp blade in it. Yes, you have to handle the actual blade when changing blades, but you do have hair on your face, so you'll be old enough to figure that out safely!