Is it uncommon for women to be a loner ?

I (23F) is a loner. Even though I'm a loner I am not looking for any friends because I've learnt my lessons too well. Whenever I say it to people that I don't have friends they are shocked. They tell me "aisa kese ho sakta hai? Ladki ho toh zarur koi na koi hoga." I've been a loner all my life. I never had friends neither in school nor in college. Yes I do sometimes miss having a friend in my life but then I realise that I don't want to hamper my peace. Is it really uncommon for women to be a loner?