I can dig the vibe of the thread, but at the same time, if I bend my mind, I've been able to understand pretty much any lens I've encountered once its primary purpose for existence is extracted.
For example, the super zoom. Who wouldn't love a lens that covered every focal range? Only those of us who understand the necessary trade-offs. But not everyone does, and many of those don't care. Leave it to the the Leicas to ignore that market niche, but most others don't work that way.
The 50/1.7. It costs less to produce, and gets you most of the way to a 1.4. I recall many arguments with my folks growing up ending with "Its good enough!". Apparently, not everyone NEEDS 1.4 and would rather save a few bucks.
Frankly, I don't get MOST lenses. I wouldn't waste any of the effort I spend working to afford a lens that I didn't research to be at the top of its class at _something_ otherwise, really, whats the point? Its just going to pass light as generically as the last thing. My phone can take pictures like that these days. But, we research. We learn. Knowledge is power, and the kingdom is ours. What we make of it is another thing