let the taxes play themselves out
Yea, it doesn't make sense to leave money on the table because it'll be taxed, IMO. Maybe it would be different if your entire income was taxed at 39% vs 33%, but since only the amount you make over the 33% threshold is taxed at 39%, then you should defintiely make all the money you can.
Now, if you're talking quality of life issues, like spending time with kids, family, etc., then that's a different story. But, I wouldn't ever not take OT because of the taxes.