what does it mean that you take offence very easily and don't like many people

this has always been me, i only had one or two friends growing up, always been reserved and introverted....and i've always took offence very easily with people and don't like a lot of people, especially nowadays.....but i'm happy being this way..one complaint i have is that it's hard to avoid certain people you don't like, because they're all around me in the world...and avoid them is what i want to do...i want nothing to do with a lot of people now.