Add me to the list of those who regularly purchase one-ways, and frequently on different carriers. I always print a copy of that flight home, jic we’re asked for it but that has never happened to date.

The only disadvantage I’ve ever found in purchasing one-ways is if, and in the case of AA - my preferred carrier, WHEN they change or cancel your flights, rebooking can become a little more difficult if only one flight is changed. This only happened to us once and AA was more than willing to work with us.

Good luck and happy travels.