I am very supportive of my husband. So much so that it causes problems financially. :/ I try my best to encourage him to do what he feels is right and what not. When it comes to the things we wants, I also try to encourage him, for most of it. I can at least put myself into his situation to see where he's coming from. I'm a stay at home mom and he works between 10 - 12 hour days, so for him to want something really isn't for me to say no about.
Him supporting me and my needs/wants is completely different. As much as I love my husband, he's very emotionally, mentally and verbally abusive to me. My ideas, to him, are all stupid or irrelevant. He's completely oblivious to my feelings, unless I'm angry, then he gets angry with me. When I went to college, he told me I wouldn't follow through with it, that I can't do anything, rather than encourage me. I've tried talking to him about it, but there's no talking to this man.
I also feel it's necessary to support each other in a relationship or marriage, to keep each other strong, to show you care, for a number of different reasons. I do wish I had that with my husband and am often upset that I don't.