@pentium85
If it were just you, making a decision on your own account, then yes I would tend to agree that you are entitled to make your own mistakes without interference.
The trouble comes when DC are involved and have to also carry the can for your own ill-judged decisions.
As I have already said, outcomes for DC from unmarried parents are universally poorer than those for DC where their parents are married to each other.
I really do have to call your judgement into question if you genuinely think you are doing the right thing by them