Anytime you add some go faster toys, its going to decrease the life span of your engine, that being said most turbo swaps out there if done correctly/tuned properly, will make some good/better power and your engine life wont decrease drastically. What WILL suffer is your tranny. If you can, when you decide what kind of turbo you want to do start putting money aside for your tranny. Also since you have an 06 anything less than an 18g is going to be a waste of your money/time/effort.
Save the environment or ill f***ing kill you!