Who do i hate people so much ?? I've tried not to .... But it fails each time ?

I am a 23 year old female and i've been struggling a lot these days with myself and maybe self esteem and confidence issues. I am generally good natured, creative, intelligent and a good looker... The only problem is that i am anti social and not very friendly. I am a non-conformist... I've never followed rules, do what i want, always speak the truth, never join the gossip groups or fake smiles. I've not learnt manipulation and diplomacy and whenever i've tried building relations with people, i give them so much of my heart, love them a lot and in the end get taken advantage of. Thats why i've started avoiding people... Because i open up my heart and all feelings, i trust easy and in the end get judged, misunderstood or used. And the second thing is.... I hate getting bothered or enquired... Whenever i try passing a cordial smile and a goodmorning greeting ro the people around me, i get commented on my personal habits or asked about my personal things .... I mean maybe thats what people usually do ''''oh god u r soooo thin, eat somethin''' ''''oh god ur eyes look swollen, cried or what ?''''' ''''oh god, what kinda clothes r u wearing?'''' '''why do u sleep so late ?'''' its because am living in a hostel, i dont bother people or even watch what they are upto, and when i get so desperately enquired or talked about, it blows my fuse.... Really irritates me or hurts me... I mean i let people get to me very easily... If someone passes a rude comment or pushes me on the way, i might just break down crying .... Instead of caring a damn.... So i try to avoid most people, i dont look at them and i hate them ... I have a wonderful boyfriend, its been four years and loving parents... They understand me, never hurt me... And i hate the rest of the mean world.... I havent seen nice people and even those who appear nice are just acting .... Is it normal to feel this way and run away rather than joining the lot ???