Titan Urectum, QF have had the 767 for almost 25 years now. Hundreds of thousands of sectors into places like the US, Hong Kong including 12 years of operations into Kai Tak, Japan, India, Thailand........
I could count the tailstrikes in that times on the fingers of one hand. When Jetstar have the same amount of sectors on the A321, lets compare notes.
Until then, try and keep that chip on your shoulder balanced.