If this were the case why do they consistently vote against government support birth control, pregnancy support programs, maternity leave, and aid programs to mothers? Be a bit like vegans demanding tax breaks for the beef industry or doctors wanting cigarette machines in middle schools.
If I thought it was murder I would definitely be doing what I could to make murder happen less often. And I know this because when I was a theist I leaned towards it being more restrictive and still supported government programs.