WOW! You covered the reasons so well. You hit this one out of the ballpark.
I would never marry again. A toxic spouse nearly ended me. Getting out was agonizing and the legal system and divorce was some brutal life draining hell! It is impossible for me to comprehend why we would want a slice of any of that. What I learned is that marriage is giving away your power, autonomy and freedom. I think the only way to know a potential partner is to get to know them over a very long period of time (years) and unchained and unbound. We need to love and care for ourselves. Spend time learning who we are and what we want. How difficult is that when attached to someone?