I'm not saying that to discourage you, but typically artistic talent appears early in life. If you have it, you know. Try it though. You may find a hidden talent.
My only concern with Blender is that it is open source meaning it evolves very quickly, so what I learn now, many not be the same in a year or 2. Unless, the changes aren't so drastic. The thing is I am taking courses for graphics, like learning OpenGL and some aspects of how to create a simple game engine
Blender does change frequently, typically every other minor version release. However, this is usually a GUI change or added features. The program has changed significantly since 2.48 (the version I first downloaded), but the techniques still apply.