I have to second what TJ Boomer has said.
I am hard on my vehicles. As is my friend I go wheeling with all the time. He has aussies front and rear, D30/D35 (I have one only in my D35). Both of us run 33s.
In 5 years for him, he has never broken an axle shaft, nor a ring and pinion. He pushes it hard. He doesn't go easy on the skinny pedal. Is he the exception to the rule? Possibly. But I haven't had a problem either...most of the people in our club (about 500 strong that have Jeeps)- run D35s.. I have yet to see a broken D35 axle from a 33" tire that was locked. I saw it happen only once, and that was running 39s, with a welded rear.
The key is to know the limits. Don't bounce the vehicle if your trying to get over an incline when it starts hopping its time to let off the pedal.
I unfortunately do not have an unlimited cash flow- and I can get a set of replacement shafts for about $60.
I can't get over how condescending some of you are being.
Because you say its right, makes it right? Get over yourself.
"A man has to know two things in life, limitations and priorities. You let your priorities get in the way of your limitations." - MrBlaine