Fairness of the pensions

I worked under Social Security untill I was employed by they V.A. starting in 1982 untill I retired in 1999. I am penialized and only able to receive 40% of my Social Security earnings. I think the systems stinks. After Medicare is taken out, i receive only $310.00 a month. My previous husband was getting about $500.00 and didn't have as much paid into the systems as I did. I was told that I couldn"t collect any of his. Now I'm married to a new husband that gets abt. $1,388.00 a month and I'm told that I can't collect any of that. So I'm being penialized for having to work to most of my life. If my new husband dies before me, I will have the responsibility of providing for his 50 yr. old daughter that is mentally like a teenager and can't hold a job and has never married. The daughter doesn't meet the S.S. guard-lines for dependency, yet she is. I strongly feel that the guard-lines are very unfair especially when I see people that have never paid into the system being rewarded.