Whether cats should be kept indoors, allowed outdoor access, or given controlled outdoor experiences involves genuine tradeoffs between safety, natural behavior expression, and environmental impact.
The indoor-outdoor debate is one where two genuine welfare concerns conflict: the safety and health benefits of indoor living, and the behavioral enrichment needs that some cats meet better with outdoor access. The evidence on longevity is clear — indoor cats live dramatically longer lives. But the evidence on behavioral welfare is more nuanced: cats confined indoors without sufficient enrichment develop stress-related health and behavioral problems. The welfare-centered resolution is not to choose one extreme but to provide the best of both: rich indoor environments that meet behavioral needs (hunting simulation, climbing, social interaction, olfactory stimulation) combined with safe outdoor access through catios or supervised leash outings. This approach protects cat welfare, preserves cat longevity, and eliminates the environmental impact of free-roaming predation.