Rule of thumb is what ever you do to one side of a vehicles axle you do the same to the other. You really need to get the other tire changed so there are 2 new ones of the same tread wear on the same axle.
You wouldn't change only one brake rotor or do the LF brakes and not the RF brakes. You do them as a set.
Not only will your transmission and differentials suffer excess wear due to unever wheel speeds your braking and ABS will suffer too.
If you had a 1970s vehicle sure you can get away with this and probably won't have any issues. But with a newer vehicle your only asking for more expensive issues.
Anyone know how to fix the NSFW posts on Connect? Most of the NSFW places I saved no longer load.