Hey, thanks for your response to my post and for sharing your perspective. I see a lot of overlap with your ideals and experience, and couldn't agree more with many of the points you made.
My husband and I were together for a solid 8 years before getting married (when I was 33 and he was 38). We knew each other and knew what we were getting into. We didn't rush into it with the expectation that one would "deliver" something for the other (e.g. financial stability or children). The only things that changed when we got married were legal and some financial aspects--for example, our abilities to serve as one anothers' healthcare proxies more easily, sign on a home or car together, be on one another's employer benefits, etc. We have maintained separate bank accounts/finances but share in some payments (mortgage, car, insurance, etc.). Also, by the time we were married, we were past a lot of the insecurities (both emotional and financial) of our 20s, and were well established in our careers in our 30s, as well as more confident and comfortable in who we are.
All of these things have been hugely instrumental in making marriage and commitment easy as pie. To reiterate: knowing one another well (I knew, after 8 years together, that he was my "person" - no 7 year itch and I love him more with each passing day); being a little more mature with perspective and financial/life stability; and not feeling that marriage is going to serve as a door opener for things like more money or children from the other person. If marriage weren't a prerequisite for some of the aforementioned financial and legal aspects that make our lives easier, we probably wouldn't have gone through with it, as our commitment to one another is between us. But that--whether the state should be involved in couples' commitment--is a separate thread for a separate time.