Having any rate helps to do algebra too. Clients can suppose that $x/hour ~= $8x/day ~= $40x/week ~= $1760x/year. So even if you quote an hourly rate the discus

Having any rate helps to do algebra too. Clients can suppose that $x/hour ~= $8x/day ~= $40x/week ~= $1760x/year. So even if you quote an hourly rate the discussion can still be "how much should we budget for a team of ten people next year." Maybe the correlation between hourly billing and bad projects is not causal.