How you pitch depends on what type of pitcher you are. If you are a strikeout pitcher you try to get strikeouts as long as that doesn't lead to excessive strikeouts (oops, excessive number of pitches). If you can't get people to swing and miss then you try to get them to hit your pitch.
Strikeouts are the ideal, but far easier said than done.
I believe, but haven't checked it, that power hitters tend to have a better BABIP than singles hitters who don't strike out often. Fly balls tend to be caught about 75% of the time. Home runs tend to be caught about 0% of the time.