Quick Preventative Maintenance Question

[hypnotiqdmg]

Over the weekend I purchased my dream 4.8is, I have the option to pick up an third party warranty from the dealership but have to decide by today. My question is... Around what mileage have most of the owners out there started to see problems? The forum points out regular woes like the boots, certain hoses, etc. but are these items going before 50k under normal driving conditions?

The X only has 9k miles on it and I'm assuming nothing should be breaking before 50k that would justify a $3500 dollar warranty.
Please help guide me in the right direction. Thanks!