Buddy of mine came back recently from the far east (MD11 F/O) and said the Capt. slowed to 210kts 25 miles out (NOT REQUESTED BY ATC). Then was assigned 170kts to the marker, but said "that's too fast, screw him" and slowed to approach speed 3 miles outside the marker.

According to my bud, there are a ton of Captains that basically fly scared. Slowing down Way to early. This Captain also said that he wouldn't let F/O's land if the crosswind exceeded 15kts.

If you ain't sure of your F/O it's cuz you ain't sure of your own abilities.