People who obviously have never been married commenting authoritatively on marriage and divorce, and what they would do, sound very amusing to me. It's no different than if a ballerina, who believes mashed potatoes come from the inside of pierogies, started commenting on the principles of agriculture. Listen: get married first, wait for a REAL HARDSHIP, live through it for a few months (or, failing that, raise a couple of kids through toddlerhood), and then I might take you seriously. As of now, you all sound like that ballerina.
For what it's worth, if you read the story, it's obvious Tyler's looks were not the only problem. There was this thing where sex was contraindicated indefinitely, and his personality, which seemed emotionally distant to begin with, grew considerably worse due to depression. (Yeah, it's not "his fault", however, the question of fault is irrelevant; the purpose of divorce isn't to punish -- but then, people who have never been married or divorced wouldn't realize that either.)
Finally, none of you understand the most likely and obvious reason Renee went through with the marriage in the first place -- peer pressure. (And no, there is absolutely NO evidence that she acted as a "media wh0re", actively sought attention of the media, or got anything out of the media exposure other than being vilified by a bunch of strangers.) Renee and Tyler come from a small town, where one is basically always on trial for his private life. She was engaged to Tyler at the time of his injury, and I think in her mind, she thought (quite reasonably) that if she broke off the engagement, she would become a pariah. (As an aside, there was a hilarious episode recently on "Curb Your Enthusiasm" about the propriety of breaking up with someone who has cancer.) It was an error of judgment on her part, but an error made under pressure. Her dilemma was not an easy one. Ultimately, she made what most people would consider the moral choice, but being 21, she failed to look at it realistically. In other words, she meant well, but she overestimated her own ability to make a sacrifice that takes a lifetime to complete.
I believe LostAndConfused when he says he wouldn't marry and then dump his girlfriend if she got horribly disfigured. What he fails to realize, however, is that he would face a lot less pressure to marry than if the genders were reversed. Women are subjected to a lot more opprobrium for dumping a mate over such "trivial" things as disfigurement, impotence and depression all combined ("the trifecta", if you will), than men are. To paraphrase Choderlos de Laclos, women are to enjoy the happiness they give, while men enjoy the happiness they feel -- which is another way of saying that women are expected to live vicariously through their lovers and husbands, and therefore to relinquish personal preferences and personal happiness in a situation like the one we are talking about. When men do the same, they are commended for it, but they aren't expected to sacrifice their happiness as a matter of course. Sure, LAC, if you dumped your injured girlfriend, there would be some murmuring -- but nothing comparable to the ****-storm that would ensue if your roles were switched. Just think of what you or most people you know would say about Renee if she did break off her engagement to Tyler.