This study examines the complexity of public opinion on abortion in Argentina following the landmark 2020 legalization. Moving beyond binary “pro-life” versus “pro-choice” classifications, we analyze attitudes through the lens of value conflict and ambivalence within a contentious policy domain. Drawing on original survey data (N = 1,021) from May–June 2022, we utilize a heteroscedastic probit model to estimate both the direction and variance of responses across seven scenarios, ranging from historically established grounds to voluntary interruption. Findings reveal that while consensus is high for historical grounds, ambivalence peaks in voluntary scenarios, driven significantly by the interaction between conflicting core values: the sanctity of life and bodily autonomy. Crucially, this value conflict generates measurable response instability even among citizens with firm opinions, challenging the narrative of a rigidly polarized society. Results demonstrate that legislative resolution does not erase moral tension, suggesting democratic discourse must account for citizens’ cognitive complexity rather than reducing public opinion to absolute alignments.