'Rent is throwing money away' is mostly a myth
Renters pay for shelter; owners also pay 'rent' — just to the bank (mortgage interest), the government (property tax), and the house itself (maintenance, insurance). Those costs are unrecoverable too. In the early years of a mortgage, the vast majority of each payment is interest, not equity. The honest comparison isn't 'rent vs mortgage payment' — it's 'rent vs the unrecoverable costs of owning, after investing the deposit difference'.
The break-even horizon is everything
Buying carries large one-off costs: agent fees, stamp duty / closing costs, moving, and the spread on selling. Spread over 2–3 years these dominate; spread over 10+ years they fade. If there's any real chance you'll move within ~5 years, renting is usually the lower-risk financial choice. The longer your horizon, the more buying's equity build-up and inflation-hedged fixed payment pull ahead.
Where inflation tips the scale toward buying
A fixed-rate mortgage payment stays flat in nominal terms while rents typically rise with inflation. Over a long horizon that asymmetry favours owning: your housing cost is frozen while a renter's keeps climbing. This is the same effect the mortgage calculator quantifies as the 'real lifetime cost' — fixed-rate debt quietly gets cheaper in real terms as inflation runs.