Well, that's a fair question. The reason for me is that I like what I like. I do a lot of long distance riding with my wife. We both want comfort. I have an 08 RSV...used to have an 01 GL1800.
I'm about a 29 inseam too, and I know what the tippy toes is all about. The biggest issue for me is backing up on the RSV. The GL1800 had reverse, so that wasn't an issue.
So, I am not ashamed to admit that I wear elevator shoes... 4.5 inches! Took a little getting used to, and I don't always wear them, but if I know that I am going to be in a lot of stop and go traffic, or know I might have to be backing up a lot, for instance, I wear them.
I've read where some users put on lower profile tires, have their seats changed or modded, or have installed a lowering kit. For me, the shoes were a cheap way out.
Actually, when I drive an HD Ultra Classic, I can flat foot at stops. Can't do it on my RSV, however.