Let me ask this: how many left-handed pianos have you seen lately?

In my experience as a teacher (about 50 years), I've found that southpaws actually have an easier time learning to play the guitar than right-handers if they learn to play on a standard ("right-handed") guitar.

There is the added advantage that if the left-hander learns to play a standard guitar, he or she can play any guitar, not just their own.

Don Firth