Everything I read in your original post had me nodding my head and going, yep, no problem, until I got to the above two statements.
Relationships, in my view, are all about compromise, communication, and respect. Relationships with children are doubly so, in that for the first 15-18 years of their life, you need to be performing the role of both sides of the relationship with their best interests in mind because they are emotionally and mentally unable to do so. In addition, open relationships rarely mean 'having complete freedom', in my experience they usually succeed because boundaries have been negotiated and both sides understand and expect that they will diligently bring value to the whole.
So, maybe your wording was just hyperbole, or maybe you really don't have any interest in supporting someone else, and maybe complete freedom is your sole motivator. If it's the former, figure out what you really are willing to offer, what you really are willing to sacrifice to give your children what they will need, and what freedoms you really are willing to compromise to make that happen. If it's the latter, I would humbly submit that (the whole question of finding a partner aside) maybe having children would be a poor fit for your personality and lifestyle.