The day my MIL told me my SIL (her divorced daughter) did this (used a sperm donor because she wanted another baby)I burst into tears. To bring a child purposely into this world without a Father is evil in my mind.
It is evil. Not just evil in your mind, but objectively evil. Deprives the child of a hugely important natural right.
Children may be fatherless by chance. (Father dies.)
Babies should NEVER be fatherless by choice.