Depends on where you live with the roads.
Where I live, roads chew up alignments and suspension components.
I live in a very rural part of northern Ohio.
The roads heave and buckle every year from the freeze/thaw cycles and the fix for our fiscally poor county is cold patch. Lots of cold patch.
Tires are expensive too.
I agree. Which is why I perform periodic checks on steering and suspension components which are far more likely to cause tire wear issues. So long as care is given to retain the original components adjustment I've never had the need for an alignment and always gotten long tire life with proper rotations and pressures.