Don't think there is anything wrong with that. Some people are just made that way.

I do want kids some day but i sometimes think im pretty cold/heartless/selfish. I've got plenty friends, good family that i get on with, good social life etc... but i could relatively easily cut all contact with them tomorrow and i rekon i'd be content in my own company.

Obviously thats drastic and purely hypothetical but i don't have a strong enough love for anyone around me that i would be a ruin if i never seen them again.

HOWEVER... Everyone i know/speak to with kids say the love you feel towards a child of yours is like no other love on earth. So i dare say if/when i have nippers my attitude may change