Swimming and Breathing.
I was a competitive swimmer. I only breathed on my right side, and try as I might, I still just breathe on my right side.
It's just how I swim, and it works just fine for me. I'm not a slow swimmer... and I typically come out of the water top 3 in my age group.
Look, do what feels comfortable. That's my motto.
I will say this though, I can get a bit of neck cramp swimming long distances and only breathing on that side.
Also, if you can breathe on both sides comfortably, when needed, you can breathe on the side where the waves are NOT hitting you in the face.
"Life is not a journey to the grave with the intention of arriving safely in a pretty and well preserved body, but rather, to skid in broadside thoroughly used-up, totally worn out, and loudly proclaiming: WOW WHAT A RIDE!!!!"