Good pronunciation is a good thing to strive for, but the main point for me is communication. Does the other person understand what you're saying?
I never had trouble with pronouncing "fuchsia" (FEW-shuh), but like Faceless39, spelling it has always been a hassle.
I've had the privilege to speak with a wide variety of people from many corners of the world. Learning to understand their pronunciation has proved to be a challenge, but a delightful learning experience. On the other hand, my learning to pronounce other languages has been a mixed bag. My pronunciation of Spanish was so good as a teenager, that a visitor to a neighbor from Dominican Republic thought I was native born and rattled off more Spanish than I had learned. But my greatest difficulties with Russian proved to be that of mastering sounds that are not found in English.
I remember when I was a small boy, my younger brother, Terry, could not pronounce "truck." It always came out "fruck," which cause great roars of laughter amongst the adults. Frankly, at the time, I didn't see what was so funny.