I can suggest a good article about this at
Even if you do not anticipate the practical usage of Geometry in your future profession, studying it, including proving theorems and solving problems, serves a very important purpose to develop your logic, analytical thinking, creativity and, arguably, intelligence.
You do not use in your day-to-day life weights, springs and tracks found in a gym, but using them develops your muscles and stamina. It also improves your overall health.
With Mathematics (and Geometry in particular) it's the same.
Math to brain = Gym to muscles.