Loss of interest in life

I quit drinking two months ago. I don't crave alcohol but I feel very bored on the weekends. At least getting drunk was something to do and something to look forward to. I had to quit drinking because it was affecting my health and my job. I have a prescription for xanax but all that really does is make me go to sleep. It doesn't give me the intoxication I want. I've decided to stop using it. It's not helping anyway
 My problem is that I have no goals and nothing to look forward to. I just turned 54 the other day. I live in a crappy house in a crappy neighborhood and i struggle to keep ahead of the bills. I fix air conditioners for a living and it doesn't pay well. My wife of 25 years and I barely get along. There is no sex life for me and hasn't been for many years although I have a normal sex drive. Even though a sex drive is there, I have no desire to be intimate with anyone. 
 As I grow older I find myself becoming more and more of a recluse. It's as if I have no use for anyone. I was talking to a few people on Facebook for a while but that became so annoying, waiting and hoping for a scrap of attention from someone...then even if I get some attention I was hoping for, I have to keep poking and prodding for more. It seems so pathetic. I want to abandon Facebook and other social networks completely. I hope I can do it. 
 I don't like my life very much. I know I should be thankful for so many things but I just don't care about many things any more.