Well my name is Maximilian and I don't like to be called Maxi or some other stupid 'cute' form of my name (my history teacher in 10th grade called me "Mäxelchen" and if you know German, you'll know that it can't get much 'cuter' than that -.-) ... Although I do prefer to be called Max instead of my full name.

And I don't bother anymore when ~80% of my family (grandparents, aunts, etc. included) refer to me with my brother's name .. I've gotten used to it