Why? I'm not sure, perhaps fear, religion, ignorance? Oh well, I wouldn't try to spend too much time why those out there are against you...
What I would advise you, is to spend your time appreciating yourself and knowing yourself. That is the greatest gift and empowerment thingy that you can do for yourself. It's really easy to look to others (friends, family, partners etc) for some sort of approval or acceptance but that's looking for love in all the wrong places! Because them out there ain't always going to be in alignment, so if they're in a bad mood and end up taking it out on you, or they simply just do not understand the brilliance that is you, you're in for a very painful ride.
You want alignment between self and self! You want to know to that you are loved and connected to infinite power and that you can be or do or have anything you desire because you exist.
Embrace all your qualities and quirks and seek out that which supports the best of who you are. I am loving the whole introvert thing thanks to Susan Cain, I can relate tremendously and it wasn't too long ago that the term 'introvert' was undesirable, but now there is far more positive connotation attached to it.
You are marvellous and there isn't anyone else quite like you out there!
All is well!!!
Happy accept-ing!!!
Lots of love, Nick Xxx