Why do managers make stupid decisions?

I know your reaction when reading this post's title was "I KNOW, right?"  But the serious part of this question is are the stupid decisions really stupid and in the grand scheme of things, does it really matter?

First, the decisions are probably not "stupid", but more likely "questionable" or "curious".  The one Runnin' Ron Roenicke decision that's been gnawing at me came in the bottom of the 9th of Wednesday's game.  3 consecutive singles and a sac fly from Morgan put the game at 6-3, Tampa Bay.

Here's where the headache begins.  Runners are on 1st and 2nd with 2 outs.  The bench consists of Craig Counsell, Mark Kotsay and George Kottaras.  Roenicke sends up the 0 for his previous 15, .236 BA, .283 SLG Mark Kotsay.  Huh?  The weird thing here is that the entire bench consisted of left-handed batters and RRR puts the coldest of the 3 up to bat?  Well, maybe he has good splits vs Farnsworth?  Not really--he was 4 for 15 lifetime.  Maybe he didn't want to use Counsell because he would've had to have come in at SS in case it went to extra innings.  So he was playing for a tie?  Can't be--that's just dumb.  But Counsell was only 2 for 9 in his career vs Farnsworth, so he's no better than Kotsay and his season stats are atrocious anyway.

But wait, what about Kottaras?  That is where the headache becomes an "IV morphine" migraine.  Then "you can't burn your backup catcher" rule is ridiculous--you're still down by 3 and you can't play for the tie.  Kottaras has never faced Farnsworth, but he's obviously the best hitter of the 3 remaining options. Why doesn't he bat?  RRR tells the press after the game, "George was on deck...it's just which guy you want to hit first".  Uhh, what?  First of all, why is Lucroy being pinch-hit for AT ALL?  So RRR's plan was PH for the catcher with an OF and then if that guy got on base, then you're going to use your back-up catcher to PH for the pitcher's spot?  Good Lord, that's simply asinine.  I mean, I get that clearly RRR wasn't playing for the tie, so you might as well empty the bench...but there are 2 outs, you need to continue the game and you bat the worst hitting of 3 options FIRST?

Put the loss on the offense going 7 innings without a run after a 2-run 1st...but Roenicke sure didn't do much to help win the game in the 9th, either.