My daughter had a g-tube (MicKey button, in her case) placed about 6mo ago.
In short- it was one of the best decisions we've ever made for her and I wish we did it sooner.
In 'long'- it was one of the most difficult decisions we've ever made for her and only came after a very long process of trying everything under the sun to help her grow... it was very hard to make the choice to do something invasive to her body. I understand your feelings completely because I felt the same way, but you are NOT a failure. This is something that becomes necessary for many children for CF, who just cannot get enough nutrition to thrive and grow no matter how vigilant we are with the calories, with the supplements, with the never-ending focus on FOOD.
In the time since she's gotten the tube she has experienced substantial weight gain and has started growing in height as well. Prior to getting it, she was considered to be in growth failure- she'd only grown something like 1/4" in over a year and even though she was gaining weight on enzymes (which improved upon adding Prevacid) she couldn't get over the 3-5th% on the charts due to what she'd lose with illness. Now, when she is sick, we can do daytime bolus feeds to help increase calories and therefore minimize weight loss, and her nighttime supplements are of a special formula that is more easily digested than regular food or typical high-calorie supplements. She's gone from struggling to maintain the 5th% in weight and off the charts for height to about the 18th% in weight and just over the 5th% in height in less than 6mo... her drs and I all have high hopes for her continued progress!! <img src="i/expressions/face-icon-small-smile.gif" border="0">
It is such a relief to not have to constantly be worried about the next meal, the calorie intake. It was so exhausting and frustrating. Emily has always been a great eater and I didn't want to lose that, to give her an unhealthy attitude about eating and associate it with pressure and stress.
I wish the very best and I will try to answer any other questions you have if I can! There are many other parents here as well who have kids w/tubes, many who've had them much longer than Emily.