I'm not sure why I should, we don't claim a "right to life".
To be clear...do you claim that one shouldn't take a "pro choice" person seriously unless that person is against all coercion? In particular, a pro choice person should permit a person to hire and fire whomever they will, regardless of race, creed, national origin, sex, or sexual orientation? They should allow people to collude together to restrict prices, markets, entry, engage in price gouging and any other means to increase profits. They should be able to spray whatever weedkiller, fertilizer, or other chemical on their lawns they wish. They should be able to decide how much of their money goes to the poor, unwed mothers, drug addicts, sick, or arts. They should be able to quit the military any time they wish, including on the battle front while engaged with the enemy. A pro choice person should be in favor of allowing a person to make any choice whatsoever. Is that what you claim?
Or do you hold a double standard--interpreting "pro life" quite broadly, but interpreting "pro life" very narrowly?