HOw come failure always occurs on me

I believe and trust him alot...but our friendship turns into somehow struggling when he does something which shouldnt be happens. Actually, i lent him my favourite wooden musical instruments, but then after the weekend passed, he told me that he had accidently scratches one of the parts. Which i had told him earlier to take good care of it. However, i was fallen into bad patches, when he told me that he does scratched my instrument.
So, i was really disappointing after he told me that...
I seems to decide the wrong choice on lending him things, but bcox i trust him, therefore i lent him. I hate to overcome this circumstances! hmm, perhaps, i should adopt to my own fate...bcox, sometimes things just happens which we do not really wants...