Cancer survival rates are suprisingly tricky to measure. If I'm diagnosed with an incurable cancer 5 years before it kills me Vs diagnosed 3 months before hand

Cancer survival rates are suprisingly tricky to measure. If I'm diagnosed with an incurable cancer 5 years before it kills me Vs diagnosed 3 months before hand then scenario 1 looks better in the cancer stats but scenario 2 is better for my peace of mind and probably avoid me having to have a bunch of superfluous medical procedures over the 5 years.