Well the bend of the question was about reducing weight and the cost to do that.
I think a lot of newbies are shocked at the cost of light weight gear and convince themselves that it's okay to get things that are a little bit heavier and more durable but cheaper. (It certainly is!)
Then, they find out that their pack weighs more than they like and they really like to get that weight down. Because they see others doing it and well who wants to be left out?
In that regard it's not as much about finding gear that will work for you as it is settling or compromising on heavier cheaper gear in the first place