What does the sibling gap cost from age 30 to 65?
The Sibling Gap
One visit every two years, until 65 — the long-term cost is 420 hours.
How the number's built.
We assume we will catch up eventually, leaving relationships to run on autopilot. One visit every two years for three days at eight waking hours a day adds up to 420 waking hours across thirty-five years. We spend less than three weeks in contact over a career.
One visit every year, not every two.
420 waking hours recovered.
No rush. It keeps until you want it.
scheduling one visit every year instead of every two
saves 12 waking hours / year
× 35 years = 420 hours recovered
1 visit / 2 years
3 days / visit
8 waking hours / day = 12 waking hours / year
× 35 years = 420 total waking hours
The cost of sibling visit drift
Last reviewed: May 2026.
An estimate built for reflection — not financial, medical, or legal advice. The figures follow the assumptions above.