I put the current odds as the following: 60% chance he selects Catherine, 35% chance he selects Lindsay, 5% chance the letter is written by Desiree and he ends up picking her.
The funny thing is even though I would not have selected either of the two finalists, I think that there is a pretty good chance that whoever he picks of the two, they will get married and have a pretty successful marriage. Both of these woman seem like the will follow and do pretty much whatever Sean wants.
I'm going the complete opposite way. I don't see this one lasting. Call it playing the odds if you want. Two of the past bachelor/bachelorette pairs is married at this point...I don't count Jason and Molly b/c he didn't pick her initially. I just think that the deck is stacked against you.-The competition aspect artificially inflates the "status" of the bachelor/ette. I mean, seriously, what are the odds that all those girls really want to marry him? Just like he found flaws in them, I'm sure many would find flaws in him.
-The tabloids are on you like white on rice
-The fame you get after the show airs makes it hard to stay true, not to mention that you can't go out in public for a while due to the show airing.
-Lastly, you've got to learn how to date and survive like a normal couple. i.e. You can't take a helicopter on every date in the real world.