it may sound harsh but i would suggest you get a job and move out of your parents house for starters. then go out and join some kind of club or hobby. getting a job and or hobby will help you meet people. i was in your similar situation not to long ago im 25 and just moved out about two months ago from my parents house, i was feeling alone all the time and wasn't getting along with them. since moving out i feel my moods and outlooks on life have gone up. parts of my relationship with my dad in particular have gotten better as well. in my case they wanted to control every aspect of my life, wanted to know where i was going what i was doing putting me down on anything and everything i did...now they can't say anything and have learned to back off...in you situation it sounds like you feel neglected from them, i bet if you moved they would see the error of their ways....i still question the unknowns in my life alot, but you just have to basically jump in and hope for the best if you want any kind of life.
tell your family what you need from them, tell your mother to get off facebook ( its my belief that facebook is the sole cause for more misery in peoples lives than they want to admit and they still refuse to stop) i don't think alot of parents really take the time to see what their kids are really going through and they think at a certian age they can't relate so they give up. so like i said try talking to them, get you a job so you can meet people and just force yourself to do things out of your comfort zone. you won't die alone and you do have something to contribute, like they say fake it til you make it...best of luck