Does An Accent Count?

As a English learner, or more precisely, a language learner, how we speak a language is within my business. I have been thinking about this question for quite a long time. Since the freshman-year, I have expressly tried to preserve a pro-British English accent for we were taught Received Pronouciation and RP is usually considered as an elegant, noble and gentlemen's English accent. But it turned out not to be that easy to speak English exactly like an Englishman.( It is true at least for me.) Reasons are multiple. E.g., American English has a vehement influence all over the world thanks to its advanced and popular entertainment industry, though American English is, so to speak, the descendant of British English.

For a period of time, my English has been thought as fake or affectatious as I tried to speak like an Englishman, articulate and not to roll my tongue like Americans. But after hanging out and talking with some Americans and sure watching American TV series and movies, I gave up the affectatious pro-Br. accent and my accent became as mixed as those whom I used to scorn sideways. And some say that mine has become quite natural now. Tonight I met a man at the same age as me, who spoke amazing English with nearly pure British English which reminded me of those interviewees in BBC London Night News. He shared his experience of learning English. His pure accent made me really envious and it aroused again my passion within to learn a pure British accent.

Dear friends, what do you guys think of it? Do accent really matter?