Some mothers feel that they want their future child to have a father the child knows and who can be a male role model in the child’s life. A man may want to have a child and (especially if he is gay) may not be able to have children easily or naturally. It is of course not necessary to have sexual intercourse and self-insemination kits are commercially available.
Of course, you will need to choose each other carefully because you will need to be able to work together for the next 19 years at least.
Read more from source: Alternative Family Law Gay-lesbian Co-Parenting