If there were no Ks, I would never allow my hitters to swing.
Power and Ks tend to go together. Really has always been that way for the most part. The top HR hitters strike out a lot. There are exceptions like Bonds in his prime years. One very good hitter with power that doesn't strike out much is Joey Votto. That combination ends up with a very good OBP.
Personally I think some of these power guys that hit a lot of HRs, would be much more productive if they developed a two strike swing/approach.