Betcha didn't know that EMD (GM locomotive) diesel engines are
2-stroke. Besides whole series of Detroit Diesels. Back when, it was
their way of upping power/weight.

Same reason for consumer 2-strokes: power/weight. In addition to not
having to keep crankcase down to avoid creating smokescreen.

You'd do best to invest in quality tool, that works for you. With
engine type choice only influenced by quality and whether it requires
you to keep more types of fuel mix on hand. (Kids running 2-stroke on
pure gas are a problem, too.)

HTH,
John