It depends. Conservatism is for smaller government, less taxes, and the promotion of the freedom of the individual to make as much of himself in a capitalistic economy as he can without unnecessary government interference. Liberalism is all about stopping all those things. Conservatism rewards those who work hard, and liberalism penalizes them. Conservatism is the champion of true economic freedom. Do you disagree?
On a social level, I can see where you are coming from. Conservatives do want laws against murdering innocent babies, gay marriage, child pornography, and the like, so technically that would be "less" freedom.
It would only be less freedom for the adult. The child would gain freedom by being born, by not being exploited sexually and children would be produced by the union of a man and woman in marriage rather than two homosexuals.
The thing to keep in mind is conservatives today are actually the liberals of old. It is the liberals who have changed into the conservatives by seeking all answers to problems by the state, or large institutions.