Well I do too.
analysing your game
It is easy to find a mistake after you made it. While I am actually in the game though it is much harder.

I can usually discern certain obvious mistakes or realize where I could have played a stronger move that wasn't necessarily a mistake. Some of the other moves the computer labels as mistakes are ones I (personally) thought were fairly good tactical & strategic moves. However, I do take those results into consideration as I study further.
The bloody computer seems to find tons of moves it thinks are 'weak' or 'blunders'. What I try to keep in mind is that the computer is totally mathematical (material vs. position). It's unable to factor in the psychological motives behind some of the moves on both sides of the board. Its good to maintain a balance between the technical and mental aspects of the game.
~The Doctor
I find it very dificult to find mistakes in my own game untill i get computer analysis first.... does anybody else feel the same way?