Even on an Astros team that notoriously doesn't care about batting average or worry about its high strikeout totals, Chris Carter pushes the bounds of acceptability. There were 211 players who received at least 400 plate appearances this year, and Carter was the only one to hit below .200. Only one player (Tampa Bay's Steven Souza) had a higher strikeout percentage than Carter's 32.6 percent. And since he's not a positive on the bases or on defense, you understand why fans have grown frustrated with him.
Now, you could worry about the things that Carter can't do.