The slight extra weight of a really good pack is not noticeable, especially for a guy of your stature and the overall improvement in ability to handle ANY load you choose to is well worth the minor increase in pack weight.

For me, I don't want a pack with the ability to "handle ANY load" -- I want a pack that will handle MY load.

We all have our toys and passion. It would be nonsensical to say that a heavy pack has no place. It certainly has a rightful place. However, it's equally a show of ignorance to put down UL gear as a matter of course.