I call bulls*** on the whole "don't get it unless you can't live any other way" thing. Yes, sometimes complications do happen, and regrets do happen. And it is important to recognize that these things are possible, and that it's important to make sure that you're absolutely sure before undertaking such a life-changing procedure.
But saying not to have it at all unless you'll be suicidal without it is complete bunk. I've heard twice as many stories of people who weren't sure that SRS was right for them when they were going in to get it done, only to later report that they loved it and couldn't imagine living any other way now. My post-op friend from Suporn calls it her "most treasured possession." And as a whole, the occurrence of trans regrets are WAY overblown. According to a 2011 survey of 448 trans people, 94% reported an improvement in their quality of life due to transition, 97% were satisfied with Hormone Repacement Therapy, and 90% were satisfied with genital surgery. Yes, that does mean that 10% of people are not satisfied with SRS, and that is indeed a statistically-significant number that should not be ignored. But I feel like it goes to show that a vast majority are indeed satisfied with it, so it's definitely not a "surgery or death" thing IMO.
Again, do your research. Make sure you're ready for it. And above all, have realistic expectations. Most of the regrets come from people who were expecting it to be this amazing grandiose thing that completely changed their lives, when in reality it's basically just a cosmetic procedure that changes the appearance and function of your genitals, something that when you get down to it only a few people in your entire life will ever see or care about. People who expect it to "turn them into a woman," or magically make them accepted, or somehow magically end their relationship issues, will be sadly mistaken.