Probally a silly topic really, but Iam very much into roleplaying my character in games such as skyrim, and Iam also very much into assassins, as such I would like to play one, my problem is joining the dark brotherhood and as such offically becoming an assassin doesnt to me sit well with taking part in the main story as they seem opposed i.e. dark brotherhood = bad, main quest = good.....

I was just really looking for advice from a roleplaying perspective how to justify it fluff wise lol... silly I know but I do really get into some of the games that I play......

I normally play good guys aswell... or morally grey.... i.e. characters such as vincent from final fantasy, or thane from ME2,

thanks for any advice....